Year	Percent
1950	2.218
1951	2.208
1952	2.193
1953	2.188
1954	2.191
1955	2.198
1956	2.207
1957	2.216
1958	2.223
1959	2.226
1960	2.225
1961	2.221
1962	2.214
1963	2.205
1964	2.192
1965	2.178
1966	2.159
1967	2.127
1968	2.073
1969	2
1970	1.919
1971	1.841
1972	1.77
1973	1.706
1974	1.652
1975	1.604
1976	1.561
1977	1.528
1978	1.512
1979	1.511
1980	1.519
1981	1.528
1982	1.542
1983	1.567
1984	1.599
1985	1.635
1986	1.668
1987	1.687
1988	1.685
1989	1.663
1990	1.629
1991	1.594
1992	1.556
1993	1.514
1994	1.469
1995	1.422
1996	1.374
1997	1.327
1998	1.284
1999	1.244
2000	1.206
2001	1.168
2002	1.135
2003	1.108
2004	1.088
2005	1.072
2006	1.056
2007	1.037
2008	1.014
2009	0.985
2010	0.953
2011	0.922
2012	0.894
2013	0.871
2014	0.851
2015	0.833
2016	0.815
2017	0.796
2018	0.775
2019	0.751
2020	0.726
2021	0.701
2022	0.678
2023	0.655
2024	0.633
2025	0.613
2026	0.592
2027	0.57
2028	0.545
2029	0.518
2030	0.49
2031	0.462
2032	0.435
2033	0.411
2034	0.389
2035	0.368
2036	0.347
2037	0.327
2038	0.306
2039	0.285
2040	0.264
2041	0.244
2042	0.224
2043	0.204
2044	0.184
2045	0.164
2046	0.145
2047	0.125
2048	0.107
2049	0.088
2050	0.07
2051	0.053
2052	0.036
2053	0.019
2054	0.003
2055	-0.012
2056	-0.027
2057	-0.042
2058	-0.056
2059	-0.068
2060	-0.081
2061	-0.093
2062	-0.104
2063	-0.116
2064	-0.128
2065	-0.139
2066	-0.15
2067	-0.161
2068	-0.171
2069	-0.181
2070	-0.19
2071	-0.199
2072	-0.208
2073	-0.218
2074	-0.227
2075	-0.236
2076	-0.245
2077	-0.254
2078	-0.262
2079	-0.27
2080	-0.278
2081	-0.286
2082	-0.293
2083	-0.298
2084	-0.303
2085	-0.306
2086	-0.309
2087	-0.312
2088	-0.313
2089	-0.314
2090	-0.314
2091	-0.313
2092	-0.312
2093	-0.311
2094	-0.31
2095	-0.308
2096	-0.307
2097	-0.305
2098	-0.303
2099	-0.301