Year	Percent
1950	1.019
1951	1.017
1952	0.993
1953	0.957
1954	0.943
1955	0.962
1956	1.015
1957	1.125
1958	1.307
1959	1.556
1960	1.835
1961	2.099
1962	2.307
1963	2.417
1964	2.426
1965	2.377
1966	2.333
1967	2.302
1968	2.267
1969	2.231
1970	2.197
1971	2.164
1972	2.134
1973	2.118
1974	2.127
1975	2.146
1976	2.162
1977	2.177
1978	2.191
1979	2.21
1980	2.228
1981	2.241
1982	2.257
1983	2.269
1984	2.268
1985	2.261
1986	2.242
1987	2.231
1988	2.247
1989	2.277
1990	2.312
1991	2.325
1992	2.29
1993	2.186
1994	2.013
1995	1.808
1996	1.603
1997	1.404
1998	1.2
1999	0.992
2000	0.789
2001	0.591
2002	0.418
2003	0.293
2004	0.218
2005	0.173
2006	0.143
2007	0.122
2008	0.118
2009	0.128
2010	0.14
2011	0.166
2012	0.218
2013	0.31
2014	0.441
2015	0.596
2016	0.746
2017	0.859
2018	0.91
2019	0.9
2020	0.854
2021	0.805
2022	0.765
2023	0.736
2024	0.717
2025	0.701
2026	0.683
2027	0.661
2028	0.636
2029	0.611
2030	0.583
2031	0.553
2032	0.525
2033	0.498
2034	0.469
2035	0.44
2036	0.41
2037	0.382
2038	0.356
2039	0.329
2040	0.301
2041	0.273
2042	0.247
2043	0.223
2044	0.202
2045	0.179
2046	0.155
2047	0.134
2048	0.118
2049	0.104
2050	0.091
2051	0.078
2052	0.069
2053	0.058
2054	0.047
2055	0.036
2056	0.025
2057	0.016
2058	0.008
2059	-0.003
2060	-0.012
2061	-0.019
2062	-0.029
2063	-0.038
2064	-0.045
2065	-0.054
2066	-0.064
2067	-0.073
2068	-0.084
2069	-0.095
2070	-0.106
2071	-0.119
2072	-0.133
2073	-0.144
2074	-0.155
2075	-0.169
2076	-0.18
2077	-0.195
2078	-0.207
2079	-0.221
2080	-0.236
2081	-0.248
2082	-0.263
2083	-0.276
2084	-0.289
2085	-0.3
2086	-0.312
2087	-0.323
2088	-0.333
2089	-0.342
2090	-0.348
2091	-0.359
2092	-0.364
2093	-0.367
2094	-0.377
2095	-0.383
2096	-0.384
2097	-0.388
2098	-0.391
2099	-0.391