Year	Percent
1950	2.497
1951	2.278
1952	1.886
1953	1.579
1954	1.35
1955	1.194
1956	1.107
1957	1.085
1958	1.124
1959	1.216
1960	1.346
1961	1.496
1962	1.645
1963	1.775
1964	1.88
1965	1.975
1966	2.072
1967	2.151
1968	2.194
1969	2.204
1970	2.199
1971	2.195
1972	2.2
1973	2.212
1974	2.235
1975	2.256
1976	2.27
1977	2.308
1978	2.395
1979	2.522
1980	2.666
1981	2.793
1982	2.861
1983	2.843
1984	2.748
1985	2.609
1986	2.467
1987	2.352
1988	2.279
1989	2.244
1990	2.227
1991	2.201
1992	2.135
1993	2.013
1994	1.839
1995	1.644
1996	1.461
1997	1.298
1998	1.157
1999	1.041
2000	0.938
2001	0.844
2002	0.781
2003	0.771
2004	0.812
2005	0.883
2006	0.959
2007	1.025
2008	1.075
2009	1.105
2010	1.126
2011	1.146
2012	1.162
2013	1.168
2014	1.163
2015	1.15
2016	1.133
2017	1.11
2018	1.077
2019	1.035
2020	0.989
2021	0.94
2022	0.892
2023	0.844
2024	0.798
2025	0.753
2026	0.709
2027	0.666
2028	0.627
2029	0.591
2030	0.558
2031	0.527
2032	0.499
2033	0.476
2034	0.458
2035	0.442
2036	0.428
2037	0.416
2038	0.405
2039	0.395
2040	0.387
2041	0.379
2042	0.37
2043	0.36
2044	0.348
2045	0.334
2046	0.32
2047	0.305
2048	0.287
2049	0.267
2050	0.246
2051	0.224
2052	0.201
2053	0.177
2054	0.153
2055	0.128
2056	0.103
2057	0.079
2058	0.056
2059	0.035
2060	0.015
2061	-0.004
2062	-0.022
2063	-0.038
2064	-0.052
2065	-0.065
2066	-0.076
2067	-0.086
2068	-0.095
2069	-0.102
2070	-0.108
2071	-0.113
2072	-0.118
2073	-0.121
2074	-0.125
2075	-0.128
2076	-0.13
2077	-0.132
2078	-0.134
2079	-0.136
2080	-0.138
2081	-0.14
2082	-0.142
2083	-0.144
2084	-0.146
2085	-0.149
2086	-0.152
2087	-0.156
2088	-0.16
2089	-0.165
2090	-0.171
2091	-0.178
2092	-0.184
2093	-0.191
2094	-0.198
2095	-0.205
2096	-0.212
2097	-0.22
2098	-0.229
2099	-0.238