Year	Percent
1950	2.042
1951	1.971
1952	1.848
1953	1.757
1954	1.692
1955	1.646
1956	1.615
1957	1.594
1958	1.579
1959	1.569
1960	1.565
1961	1.571
1962	1.591
1963	1.629
1964	1.684
1965	1.748
1966	1.813
1967	1.874
1968	1.927
1969	1.971
1970	2.009
1971	2.047
1972	2.084
1973	2.118
1974	2.15
1975	2.178
1976	2.204
1977	2.227
1978	2.248
1979	2.268
1980	2.289
1981	2.311
1982	2.324
1983	2.316
1984	2.293
1985	2.254
1986	2.213
1987	2.209
1988	2.272
1989	2.392
1990	2.535
1991	2.66
1992	2.72
1993	2.691
1994	2.578
1995	2.423
1996	2.269
1997	2.129
1998	2.005
1999	1.899
2000	1.803
2001	1.709
2002	1.606
2003	1.49
2004	1.363
2005	1.232
2006	1.108
2007	1.021
2008	0.994
2009	1.023
2010	1.084
2011	1.146
2012	1.19
2013	1.203
2014	1.185
2015	1.151
2016	1.119
2017	1.094
2018	1.075
2019	1.062
2020	1.052
2021	1.038
2022	1.019
2023	0.993
2024	0.961
2025	0.926
2026	0.89
2027	0.854
2028	0.815
2029	0.776
2030	0.736
2031	0.697
2032	0.658
2033	0.62
2034	0.585
2035	0.551
2036	0.518
2037	0.486
2038	0.458
2039	0.432
2040	0.407
2041	0.384
2042	0.361
2043	0.338
2044	0.314
2045	0.291
2046	0.268
2047	0.245
2048	0.223
2049	0.201
2050	0.179
2051	0.157
2052	0.135
2053	0.111
2054	0.087
2055	0.061
2056	0.036
2057	0.01
2058	-0.016
2059	-0.043
2060	-0.07
2061	-0.097
2062	-0.124
2063	-0.15
2064	-0.177
2065	-0.203
2066	-0.229
2067	-0.256
2068	-0.283
2069	-0.309
2070	-0.336
2071	-0.363
2072	-0.39
2073	-0.416
2074	-0.441
2075	-0.466
2076	-0.49
2077	-0.515
2078	-0.538
2079	-0.562
2080	-0.585
2081	-0.608
2082	-0.629
2083	-0.65
2084	-0.67
2085	-0.688
2086	-0.705
2087	-0.722
2088	-0.736
2089	-0.749
2090	-0.761
2091	-0.771
2092	-0.779
2093	-0.787
2094	-0.793
2095	-0.798
2096	-0.801
2097	-0.802
2098	-0.801
2099	-0.799