Year	Percent
1950	3.078
1951	3.06
1952	3.032
1953	3.019
1954	3.015
1955	3.014
1956	3.012
1957	3.006
1958	2.993
1959	2.972
1960	2.947
1961	2.923
1962	2.905
1963	2.897
1964	2.898
1965	2.901
1966	2.901
1967	2.892
1968	2.87
1969	2.838
1970	2.801
1971	2.766
1972	2.727
1973	2.68
1974	2.626
1975	2.569
1976	2.514
1977	2.474
1978	2.456
1979	2.459
1980	2.473
1981	2.486
1982	2.488
1983	2.473
1984	2.441
1985	2.401
1986	2.365
1987	2.338
1988	2.326
1989	2.327
1990	2.336
1991	2.345
1992	2.345
1993	2.333
1994	2.309
1995	2.279
1996	2.25
1997	2.236
1998	2.243
1999	2.271
2000	2.307
2001	2.34
2002	2.357
2003	2.352
2004	2.327
2005	2.291
2006	2.255
2007	2.224
2008	2.199
2009	2.18
2010	2.162
2011	2.143
2012	2.119
2013	2.092
2014	2.061
2015	2.027
2016	1.993
2017	1.96
2018	1.926
2019	1.893
2020	1.86
2021	1.826
2022	1.792
2023	1.757
2024	1.722
2025	1.687
2026	1.653
2027	1.618
2028	1.583
2029	1.548
2030	1.513
2031	1.478
2032	1.444
2033	1.411
2034	1.379
2035	1.347
2036	1.315
2037	1.284
2038	1.254
2039	1.224
2040	1.194
2041	1.165
2042	1.137
2043	1.109
2044	1.082
2045	1.055
2046	1.029
2047	1.003
2048	0.977
2049	0.951
2050	0.925
2051	0.9
2052	0.875
2053	0.85
2054	0.825
2055	0.801
2056	0.776
2057	0.752
2058	0.727
2059	0.701
2060	0.676
2061	0.65
2062	0.625
2063	0.599
2064	0.574
2065	0.549
2066	0.525
2067	0.5
2068	0.475
2069	0.45
2070	0.426
2071	0.401
2072	0.377
2073	0.353
2074	0.331
2075	0.308
2076	0.286
2077	0.264
2078	0.243
2079	0.221
2080	0.2
2081	0.179
2082	0.159
2083	0.14
2084	0.121
2085	0.102
2086	0.084
2087	0.067
2088	0.05
2089	0.034
2090	0.019
2091	0.004
2092	-0.01
2093	-0.024
2094	-0.037
2095	-0.05
2096	-0.062
2097	-0.073
2098	-0.084
2099	-0.094