Year	Percent
1950	2.211
1951	2.298
1952	2.465
1953	2.613
1954	2.741
1955	2.846
1956	2.927
1957	2.982
1958	3.013
1959	3.022
1960	3.012
1961	2.99
1962	2.963
1963	2.935
1964	2.906
1965	2.877
1966	2.842
1967	2.791
1968	2.714
1969	2.615
1970	2.508
1971	2.409
1972	2.326
1973	2.267
1974	2.229
1975	2.202
1976	2.179
1977	2.168
1978	2.182
1979	2.216
1980	2.26
1981	2.3
1982	2.327
1983	2.335
1984	2.323
1985	2.299
1986	2.267
1987	2.234
1988	2.202
1989	2.169
1990	2.136
1991	2.097
1992	2.032
1993	1.927
1994	1.786
1995	1.629
1996	1.477
1997	1.344
1998	1.236
1999	1.155
2000	1.089
2001	1.03
2002	0.981
2003	0.949
2004	0.935
2005	0.929
2006	0.929
2007	0.939
2008	0.966
2009	1.007
2010	1.057
2011	1.106
2012	1.139
2013	1.144
2014	1.121
2015	1.082
2016	1.041
2017	1.006
2018	0.979
2019	0.959
2020	0.943
2021	0.924
2022	0.898
2023	0.865
2024	0.824
2025	0.779
2026	0.734
2027	0.692
2028	0.652
2029	0.614
2030	0.578
2031	0.544
2032	0.512
2033	0.486
2034	0.464
2035	0.446
2036	0.429
2037	0.413
2038	0.399
2039	0.386
2040	0.373
2041	0.362
2042	0.349
2043	0.336
2044	0.321
2045	0.305
2046	0.289
2047	0.271
2048	0.253
2049	0.232
2050	0.211
2051	0.189
2052	0.166
2053	0.143
2054	0.119
2055	0.095
2056	0.071
2057	0.048
2058	0.024
2059	0.002
2060	-0.021
2061	-0.042
2062	-0.062
2063	-0.081
2064	-0.097
2065	-0.113
2066	-0.127
2067	-0.14
2068	-0.151
2069	-0.16
2070	-0.168
2071	-0.175
2072	-0.182
2073	-0.187
2074	-0.192
2075	-0.197
2076	-0.2
2077	-0.204
2078	-0.207
2079	-0.21
2080	-0.213
2081	-0.215
2082	-0.217
2083	-0.218
2084	-0.219
2085	-0.219
2086	-0.219
2087	-0.219
2088	-0.218
2089	-0.217
2090	-0.216
2091	-0.214
2092	-0.212
2093	-0.21
2094	-0.208
2095	-0.206
2096	-0.203
2097	-0.2
2098	-0.198
2099	-0.195