Year	Percent
1950	1.84
1951	1.845
1952	1.87
1953	1.918
1954	1.978
1955	2.04
1956	2.094
1957	2.133
1958	2.152
1959	2.151
1960	2.139
1961	2.127
1962	2.132
1963	2.167
1964	2.228
1965	2.3
1966	2.366
1967	2.413
1968	2.435
1969	2.434
1970	2.419
1971	2.403
1972	2.389
1973	2.377
1974	2.368
1975	2.356
1976	2.337
1977	2.319
1978	2.305
1979	2.296
1980	2.285
1981	2.268
1982	2.232
1983	2.173
1984	2.091
1985	2
1986	1.912
1987	1.817
1988	1.705
1989	1.58
1990	1.447
1991	1.318
1992	1.223
1993	1.185
1994	1.203
1995	1.25
1996	1.294
1997	1.315
1998	1.299
1999	1.247
2000	1.181
2001	1.121
2002	1.058
2003	0.98
2004	0.892
2005	0.797
2006	0.706
2007	0.644
2008	0.636
2009	0.679
2010	0.75
2011	0.821
2012	0.878
2013	0.911
2014	0.92
2015	0.917
2016	0.914
2017	0.909
2018	0.896
2019	0.877
2020	0.851
2021	0.823
2022	0.796
2023	0.77
2024	0.747
2025	0.725
2026	0.702
2027	0.676
2028	0.648
2029	0.618
2030	0.587
2031	0.556
2032	0.524
2033	0.492
2034	0.46
2035	0.427
2036	0.395
2037	0.363
2038	0.331
2039	0.3
2040	0.27
2041	0.24
2042	0.211
2043	0.185
2044	0.16
2045	0.136
2046	0.113
2047	0.091
2048	0.07
2049	0.051
2050	0.033
2051	0.016
2052	0
2053	-0.016
2054	-0.032
2055	-0.047
2056	-0.061
2057	-0.076
2058	-0.09
2059	-0.104
2060	-0.117
2061	-0.131
2062	-0.144
2063	-0.158
2064	-0.173
2065	-0.187
2066	-0.201
2067	-0.216
2068	-0.229
2069	-0.243
2070	-0.256
2071	-0.268
2072	-0.281
2073	-0.293
2074	-0.305
2075	-0.317
2076	-0.328
2077	-0.338
2078	-0.348
2079	-0.356
2080	-0.364
2081	-0.37
2082	-0.376
2083	-0.381
2084	-0.384
2085	-0.386
2086	-0.388
2087	-0.388
2088	-0.388
2089	-0.387
2090	-0.386
2091	-0.384
2092	-0.381
2093	-0.379
2094	-0.376
2095	-0.373
2096	-0.371
2097	-0.368
2098	-0.365
2099	-0.363