Year	Percent
1950	1.588
1951	1.738
1952	1.988
1953	2.137
1954	2.212
1955	2.233
1956	2.217
1957	2.182
1958	2.139
1959	2.095
1960	2.048
1961	1.987
1962	1.9
1963	1.781
1964	1.636
1965	1.471
1966	1.306
1967	1.186
1968	1.145
1969	1.177
1970	1.25
1971	1.328
1972	1.364
1973	1.324
1974	1.22
1975	1.085
1976	0.953
1977	0.868
1978	0.856
1979	0.909
1980	0.999
1981	1.085
1982	1.148
1983	1.173
1984	1.165
1985	1.143
1986	1.12
1987	1.098
1988	1.073
1989	1.047
1990	1.022
1991	0.992
1992	0.967
1993	0.949
1994	0.938
1995	0.936
1996	0.94
1997	0.943
1998	0.937
1999	0.925
2000	0.898
2001	0.865
2002	0.884
2003	1.002
2004	1.206
2005	1.46
2006	1.703
2007	1.827
2008	1.752
2009	1.496
2010	1.147
2011	0.805
2012	0.555
2013	0.448
2014	0.489
2015	0.607
2016	0.719
2017	0.792
2018	0.82
2019	0.8
2020	0.757
2021	0.722
2022	0.694
2023	0.669
2024	0.65
2025	0.634
2026	0.614
2027	0.591
2028	0.57
2029	0.548
2030	0.524
2031	0.501
2032	0.479
2033	0.457
2034	0.434
2035	0.413
2036	0.394
2037	0.372
2038	0.352
2039	0.334
2040	0.314
2041	0.297
2042	0.279
2043	0.262
2044	0.246
2045	0.229
2046	0.213
2047	0.199
2048	0.184
2049	0.17
2050	0.156
2051	0.143
2052	0.131
2053	0.119
2054	0.11
2055	0.101
2056	0.092
2057	0.084
2058	0.076
2059	0.07
2060	0.064
2061	0.057
2062	0.051
2063	0.045
2064	0.037
2065	0.029
2066	0.021
2067	0.014
2068	0.006
2069	-0.003
2070	-0.01
2071	-0.017
2072	-0.025
2073	-0.035
2074	-0.043
2075	-0.051
2076	-0.061
2077	-0.071
2078	-0.079
2079	-0.088
2080	-0.094
2081	-0.101
2082	-0.11
2083	-0.116
2084	-0.121
2085	-0.126
2086	-0.131
2087	-0.135
2088	-0.139
2089	-0.141
2090	-0.142
2091	-0.143
2092	-0.144
2093	-0.146
2094	-0.147
2095	-0.149
2096	-0.15
2097	-0.152
2098	-0.153
2099	-0.154