Year	Percent
1950	1.654
1951	1.751
1952	1.929
1953	2.078
1954	2.204
1955	2.316
1956	2.42
1957	2.522
1958	2.624
1959	2.726
1960	2.822
1961	2.9
1962	2.947
1963	2.956
1964	2.929
1965	2.881
1966	2.824
1967	2.769
1968	2.718
1969	2.671
1970	2.623
1971	2.568
1972	2.501
1973	2.423
1974	2.335
1975	2.243
1976	2.152
1977	2.055
1978	1.941
1979	1.814
1980	1.683
1981	1.558
1982	1.456
1983	1.386
1984	1.348
1985	1.324
1986	1.302
1987	1.287
1988	1.291
1989	1.311
1990	1.339
1991	1.364
1992	1.364
1993	1.321
1994	1.237
1995	1.132
1996	1.029
1997	0.933
1998	0.843
1999	0.764
2000	0.689
2001	0.616
2002	0.552
2003	0.506
2004	0.479
2005	0.462
2006	0.45
2007	0.442
2008	0.44
2009	0.443
2010	0.448
2011	0.457
2012	0.468
2013	0.479
2014	0.491
2015	0.503
2016	0.515
2017	0.524
2018	0.527
2019	0.524
2020	0.516
2021	0.508
2022	0.498
2023	0.489
2024	0.481
2025	0.472
2026	0.461
2027	0.446
2028	0.425
2029	0.396
2030	0.364
2031	0.331
2032	0.302
2033	0.28
2034	0.265
2035	0.254
2036	0.243
2037	0.228
2038	0.21
2039	0.186
2040	0.161
2041	0.135
2042	0.112
2043	0.089
2044	0.069
2045	0.049
2046	0.029
2047	0.01
2048	-0.009
2049	-0.026
2050	-0.042
2051	-0.059
2052	-0.076
2053	-0.093
2054	-0.111
2055	-0.13
2056	-0.149
2057	-0.168
2058	-0.187
2059	-0.208
2060	-0.228
2061	-0.249
2062	-0.27
2063	-0.291
2064	-0.311
2065	-0.332
2066	-0.352
2067	-0.373
2068	-0.394
2069	-0.415
2070	-0.436
2071	-0.457
2072	-0.478
2073	-0.5
2074	-0.522
2075	-0.544
2076	-0.565
2077	-0.587
2078	-0.609
2079	-0.631
2080	-0.653
2081	-0.674
2082	-0.694
2083	-0.714
2084	-0.731
2085	-0.748
2086	-0.764
2087	-0.778
2088	-0.791
2089	-0.802
2090	-0.811
2091	-0.819
2092	-0.825
2093	-0.831
2094	-0.836
2095	-0.839
2096	-0.841
2097	-0.842
2098	-0.84
2099	-0.837