Year	realP	realD
1950	100.000	6.570
1951	112.541	6.899
1952	121.093	7.023
1953	121.314	7.036
1954	144.563	7.156
1955	197.885	8.074
1956	224.493	9.182
1957	206.862	8.998
1958	209.565	8.320
1959	258.266	8.342
1960	247.133	8.576
1961	290.299	8.651
1962	270.544	9.117
1963	299.067	9.480
1964	343.797	10.348
1965	366.614	10.998
1966	344.667	11.719
1967	360.504	11.536
1968	371.481	11.404
1969	349.180	11.313
1970	280.928	10.760
1971	317.873	9.981
1972	342.173	9.718
1973	316.914	9.698
1974	220.113	9.839
1975	209.760	9.041
1976	234.817	8.853
1977	212.245	9.806
1978	192.892	10.185
1979	185.841	10.166
1980	188.806	9.931
1981	184.508	9.594
1982	162.481	9.440
1983	210.946	9.282
1984	202.279	9.386
1985	227.435	9.666
1986	282.440	9.857
1987	330.709	10.186
1988	294.275	10.712
1989	341.008	11.765
1990	335.302	12.104
1991	361.758	11.721
1992	388.118	11.605
1993	409.169	11.375
1994	406.837	11.473
1995	465.506	11.917
1996	560.001	12.264
1997	712.195	12.606