Year	Percent
1950	1.556
1951	1.602
1952	1.687
1953	1.756
1954	1.813
1955	1.861
1956	1.901
1957	1.937
1958	1.97
1959	2.001
1960	2.03
1961	2.058
1962	2.083
1963	2.104
1964	2.123
1965	2.142
1966	2.163
1967	2.189
1968	2.221
1969	2.261
1970	2.294
1971	2.315
1972	2.357
1973	2.443
1974	2.563
1975	2.689
1976	2.785
1977	2.812
1978	2.749
1979	2.6
1980	2.441
1981	2.313
1982	2.117
1983	1.76
1984	1.274
1985	0.698
1986	0.14
1987	-0.122
1988	0.149
1989	0.934
1990	1.998
1991	3.016
1992	3.704
1993	3.914
1994	3.693
1995	3.278
1996	2.903
1997	2.662
1998	2.577
1999	2.645
2000	2.776
2001	2.882
2002	2.945
2003	2.974
2004	2.97
2005	2.951
2006	2.936
2007	2.928
2008	2.923
2009	2.921
2010	2.92
2011	2.917
2012	2.912
2013	2.905
2014	2.896
2015	2.886
2016	2.876
2017	2.863
2018	2.85
2019	2.834
2020	2.818
2021	2.8
2022	2.783
2023	2.765
2024	2.748
2025	2.73
2026	2.711
2027	2.691
2028	2.67
2029	2.649
2030	2.626
2031	2.603
2032	2.578
2033	2.551
2034	2.523
2035	2.494
2036	2.464
2037	2.434
2038	2.404
2039	2.373
2040	2.343
2041	2.312
2042	2.281
2043	2.251
2044	2.22
2045	2.189
2046	2.158
2047	2.128
2048	2.1
2049	2.072
2050	2.044
2051	2.017
2052	1.989
2053	1.962
2054	1.934
2055	1.907
2056	1.88
2057	1.852
2058	1.824
2059	1.796
2060	1.768
2061	1.74
2062	1.713
2063	1.685
2064	1.658
2065	1.631
2066	1.604
2067	1.577
2068	1.55
2069	1.523
2070	1.496
2071	1.469
2072	1.443
2073	1.416
2074	1.39
2075	1.365
2076	1.339
2077	1.314
2078	1.288
2079	1.263
2080	1.237
2081	1.212
2082	1.187
2083	1.162
2084	1.137
2085	1.111
2086	1.086
2087	1.062
2088	1.038
2089	1.015
2090	0.992
2091	0.97
2092	0.947
2093	0.925
2094	0.902
2095	0.879
2096	0.855
2097	0.832
2098	0.81
2099	0.787