ID year quarter r y pi
  1 1950 1   0.510  11.538320   0.50
  2 1950 2   0.510  11.538320   4.06
  3 1950 3   0.550  11.561030   5.50
  4 1950 4   0.623  11.601046   9.85
  5 1951 1   0.693  11.619265  14.00
  6 1951 2   0.750  11.601156  11.67
  7 1951 3   0.803  11.596200   8.00
  8 1951 4   0.913  11.597634   3.26
  9 1952 1   0.907  11.648575   3.39
 10 1952 2   1.013  11.675044  -2.93
 11 1952 3   1.110  11.688122  -2.58
 12 1952 4   1.233  11.721824  -1.07
 13 1953 1   1.440  11.719907   0.08
 14 1953 2   1.597  11.733474   0.71
 15 1953 3   1.823  11.728875   2.01
 16 1953 4   1.903  11.746637   1.26
 17 1954 1   1.740  11.703083   0.98
 18 1954 2   1.583  11.711186   1.65
 19 1954 3   1.303  11.725615   0.81
 20 1954 4   1.237  11.744672  -0.65
 21 1955 1   1.007  11.773596   0.99
 22 1955 2   1.277  11.800627  -0.62
 23 1955 3   1.600  11.825076  -0.80
 24 1955 4   2.330  11.847997  -0.38
 25 1956 1   2.563  11.875177   1.46
 26 1956 2   2.767  11.886033   2.53
 27 1956 3   2.847  11.893442   5.30
 28 1956 4   3.433  11.924426   3.79
 29 1957 1   3.723  11.919883   3.18
 30 1957 2   3.763  11.918177   3.76
 31 1957 3   3.907  11.925247   1.58
 32 1957 4   3.717  11.914998   0.46
 33 1958 1   2.990  11.914891   5.29
 34 1958 2   1.660  11.936466   4.15
 35 1958 3   1.540  11.949631  -1.18
 36 1958 4   2.980  11.962624   1.17
 37 1959 1   3.733  11.963848   1.80
 38 1959 2   4.883  11.974544   1.22
 39 1959 3   5.593  11.985376   0.40
 40 1959 4   5.010  11.994759   2.35
 41 1960 1   4.457  12.014525  -0.44
 42 1960 2   3.047  11.995105   1.87
 43 1960 3   2.567  12.010252   0.86
 44 1960 4   3.227  12.013555   1.17
 45 1961 1   3.153  12.005595  -0.04
 46 1961 2   3.090  12.033123   0.09
 47 1961 3   2.503  12.050518   0.27
 48 1961 4   2.590  12.066765   1.57
 49 1962 1   3.093  12.094784   1.30
 50 1962 2   3.640  12.095901   2.17
 51 1962 3   5.217  12.111014   1.64
 52 1962 4   4.100  12.128759   1.49
 53 1963 1   3.710  12.135221   2.27
 54 1963 2   3.380  12.147511   2.36
 55 1963 3   3.560  12.157450   2.66
 56 1963 4   3.640  12.192156   2.01
 57 1964 1   3.817  12.210881   0.61
 58 1964 2   3.657  12.214973   1.17
 59 1964 3   3.737  12.229945   1.52
 60 1964 4   3.760  12.235360   2.64
 61 1965 1   3.737  12.265605   1.04
 62 1965 2   3.817  12.275319   3.41
 63 1965 3   4.063  12.289917   2.05
 64 1965 4   4.253  12.315411   3.24
 65 1966 1   4.720  12.338048   4.92
 66 1966 2   5.083  12.351557   5.35
 67 1966 3   5.060  12.354337   1.60
 68 1966 4   5.130  12.365535   4.40
 69 1967 1   4.570  12.363401   3.57
 70 1967 2   4.147  12.383281   4.60
 71 1967 3   4.367  12.387627   4.76
 72 1967 4   5.263  12.390708   3.92
 73 1968 1   6.470  12.400850   5.43
 74 1968 2   6.873  12.426027   4.51
 75 1968 3   5.897  12.443340   2.83
 76 1968 4   5.740  12.462605   3.64
 77 1969 1   6.430  12.469882   3.40
 78 1969 2   6.813  12.475306   6.54
 79 1969 3   7.620  12.488601   3.06
 80 1969 4   7.723  12.508279   4.33
 81 1970 1   7.607  12.506710   5.22
 82 1970 2   6.407  12.501634   2.40
 83 1970 3   5.630  12.518867   0.37
 84 1970 4   4.827  12.517667   1.53
 85 1971 1   4.133  12.526546   1.51
 86 1971 2   3.087  12.557096   4.43
 87 1971 3   3.797  12.586630   3.48
 88 1971 4   3.450  12.597141   4.03
 89 1972 1   3.427  12.593944   3.70
 90 1972 2   3.637  12.620867   3.99
 91 1972 3   3.507  12.624678   5.60
 92 1972 4   3.613  12.651527   3.92
 93 1973 1   4.000  12.681971   5.37
 94 1973 2   5.070  12.690977   7.98
 95 1973 3   6.030  12.694358   9.48
 96 1973 4   6.450  12.721265   7.41
 97 1974 1   6.223  12.731168   9.53
 98 1974 2   8.017  12.736936  12.10
 99 1974 3   9.013  12.742964  11.03
100 1974 4   7.883  12.750140  13.76
101 1975 1   6.427  12.749083   8.86
102 1975 2   6.800  12.758428   7.75
103 1975 3   7.793  12.773192   9.88
104 1975 4   8.443  12.783001   7.14
105 1976 1   8.777  12.805601   7.64
106 1976 2   8.967  12.828153   5.57
107 1976 3   9.037  12.835012   5.60
108 1976 4   8.787  12.834191   5.54
109 1977 1   7.787  12.850660   8.13
110 1977 2   7.293  12.854411   8.63
111 1977 3   7.123  12.860801   7.87
112 1977 4   7.207  12.879150   7.01
113 1978 1   7.333  12.888765   7.17
114 1978 2   8.183  12.903222   5.58
115 1978 3   8.740  12.909992   8.33
116 1978 4  10.080  12.921891   9.15
117 1979 1  10.830  12.933438   7.48
118 1979 2  10.833  12.939123   8.65
119 1979 3  11.267  12.949133   8.03
120 1979 4  13.367  12.954257   8.80
121 1980 1  13.817  12.956979   9.58
122 1980 2  13.010  12.955487  10.12
123 1980 3  10.313  12.950958  10.35
124 1980 4  13.583  12.971475  11.32
125 1981 1  16.760  12.991562  11.95
126 1981 2  18.120  13.004210   8.74
127 1981 3  19.940  12.995257  11.45
128 1981 4  16.290  12.988174   9.24
129 1982 1  14.633  12.976607   9.72
130 1982 2  15.420  12.964268  10.28
131 1982 3  14.420  12.957715   9.29
132 1982 4  10.837  12.949713   8.11
133 1983 1   9.380  12.966551   3.27
134 1983 2   9.193  12.988805   5.23
135 1983 3   9.283  13.004741   5.26
136 1983 4   9.437  13.012388   5.22
137 1984 1   9.943  13.028747   3.70
138 1984 2  11.190  13.051537   2.12
139 1984 3  12.367  13.062749   2.70
140 1984 4  10.890  13.074173   4.00
141 1985 1  10.390  13.086662   4.68
142 1985 2   9.610  13.090096   3.30
143 1985 3   9.033  13.102291   3.19
144 1985 4   8.797  13.124553   3.47
145 1986 1  10.690  13.130252   5.25
146 1986 2   8.690  13.132456   2.38
147 1986 3   8.313  13.137654   3.24
148 1986 4   8.270  13.134150   4.97
149 1987 1   7.343  13.154164   4.36
150 1987 2   7.960  13.163267   3.71
151 1987 3   8.900  13.183285   2.80
152 1987 4   8.473  13.196506   4.25
153 1988 1   8.390  13.209201   2.68
154 1988 2   8.947  13.223070   4.45
155 1988 3   9.717  13.226298   4.16
156 1988 4  10.610  13.233425   4.97
157 1989 1  11.523  13.243986   3.04
158 1989 2  12.187  13.245388   7.06
159 1989 3  12.140  13.248968   5.28
160 1989 4  12.213  13.250475   2.57
161 1990 1  12.730  13.253932   4.13
162 1990 2  13.540  13.249588   3.69
163 1990 3  12.907  13.244546   4.77
164 1990 4  12.043  13.231211   5.35
165 1991 1  10.157  13.218808   9.54
166 1991 2   9.001  13.226990   1.65
167 1991 3   8.562  13.229890   2.41
168 1991 4   7.601  13.231533  -2.00
169 1992 1   7.218  13.231957   1.78
170 1992 2   6.304  13.234377   1.95
171 1992 3   5.251  13.235035   2.29
172 1992 4   7.262  13.236427   2.34
173 1993 1   6.051  13.246116   0.83
174 1993 2   4.980  13.254016   1.98
175 1993 3   4.468  13.258019   1.46
176 1993 4   4.208  13.267364   1.90
177 1994 1   3.946  13.277958  -1.45
178 1994 2   6.154  13.288935   0.52
179 1994 3   5.666  13.302823   1.48
180 1994 4   5.901  13.315091   1.69
181 1995 1   7.884  13.319127   1.37
182 1995 2   7.454  13.316620   2.51
183 1995 3   6.540  13.319567   1.69
184 1995 4   6.049  13.321889   0.05
185 1996 1   5.215  13.325324   0.46
186 1996 2   4.777  13.328877   2.22
187 1996 3   4.216  13.337101   1.40
188 1996 4   3.028  13.344239   1.81
