Year	Percent
1950	2.059
1951	2.044
1952	2.007
1953	1.956
1954	1.898
1955	1.838
1956	1.779
1957	1.726
1958	1.681
1959	1.646
1960	1.619
1961	1.596
1962	1.571
1963	1.541
1964	1.507
1965	1.47
1966	1.435
1967	1.423
1968	1.448
1969	1.507
1970	1.585
1971	1.661
1972	1.708
1973	1.709
1974	1.665
1975	1.598
1976	1.533
1977	1.489
1978	1.477
1979	1.495
1980	1.528
1981	1.555
1982	1.572
1983	1.573
1984	1.561
1985	1.541
1986	1.519
1987	1.498
1988	1.474
1989	1.448
1990	1.421
1991	1.394
1992	1.363
1993	1.324
1994	1.279
1995	1.231
1996	1.185
1997	1.147
1998	1.123
1999	1.113
2000	1.111
2001	1.11
2002	1.106
2003	1.096
2004	1.08
2005	1.06
2006	1.042
2007	1.03
2008	1.027
2009	1.031
2010	1.04
2011	1.048
2012	1.049
2013	1.04
2014	1.021
2015	0.997
2016	0.973
2017	0.95
2018	0.93
2019	0.911
2020	0.893
2021	0.874
2022	0.856
2023	0.838
2024	0.82
2025	0.804
2026	0.787
2027	0.77
2028	0.754
2029	0.737
2030	0.72
2031	0.704
2032	0.687
2033	0.671
2034	0.655
2035	0.64
2036	0.624
2037	0.609
2038	0.594
2039	0.579
2040	0.564
2041	0.549
2042	0.534
2043	0.519
2044	0.505
2045	0.49
2046	0.476
2047	0.462
2048	0.447
2049	0.432
2050	0.417
2051	0.402
2052	0.387
2053	0.372
2054	0.356
2055	0.341
2056	0.325
2057	0.31
2058	0.294
2059	0.279
2060	0.263
2061	0.248
2062	0.232
2063	0.217
2064	0.201
2065	0.186
2066	0.171
2067	0.156
2068	0.142
2069	0.128
2070	0.115
2071	0.102
2072	0.09
2073	0.078
2074	0.067
2075	0.056
2076	0.046
2077	0.036
2078	0.027
2079	0.018
2080	0.009
2081	0.001
2082	-0.007
2083	-0.016
2084	-0.024
2085	-0.033
2086	-0.041
2087	-0.05
2088	-0.057
2089	-0.065
2090	-0.073
2091	-0.08
2092	-0.087
2093	-0.094
2094	-0.101
2095	-0.108
2096	-0.115
2097	-0.121
2098	-0.127
2099	-0.133