Year	Percent
1950	4.429
1951	3.644
1952	2.286
1953	1.316
1954	0.659
1955	0.27
1956	0.128
1957	0.212
1958	0.497
1959	0.941
1960	1.491
1961	2.071
1962	2.591
1963	2.987
1964	3.24
1965	3.436
1966	3.608
1967	3.569
1968	3.148
1969	2.405
1970	1.503
1971	0.635
1972	0.002
1973	-0.249
1974	-0.107
1975	0.249
1976	0.61
1977	0.921
1978	1.191
1979	1.401
1980	1.601
1981	1.82
1982	1.978
1983	1.997
1984	1.892
1985	1.713
1986	1.535
1987	1.46
1988	1.559
1989	1.819
1990	2.153
1991	2.455
1992	2.655
1993	2.719
1994	2.654
1995	2.522
1996	2.39
1997	2.273
1998	2.171
1999	2.083
2000	2.004
2001	1.919
2002	1.818
2003	1.692
2004	1.543
2005	1.385
2006	1.235
2007	1.124
2008	1.07
2009	1.072
2010	1.105
2011	1.141
2012	1.171
2013	1.197
2014	1.216
2015	1.231
2016	1.249
2017	1.26
2018	1.262
2019	1.25
2020	1.231
2021	1.21
2022	1.19
2023	1.171
2024	1.152
2025	1.133
2026	1.112
2027	1.088
2028	1.063
2029	1.037
2030	1.008
2031	0.979
2032	0.95
2033	0.92
2034	0.891
2035	0.861
2036	0.832
2037	0.802
2038	0.773
2039	0.745
2040	0.717
2041	0.689
2042	0.662
2043	0.636
2044	0.612
2045	0.588
2046	0.564
2047	0.54
2048	0.516
2049	0.491
2050	0.466
2051	0.441
2052	0.417
2053	0.392
2054	0.368
2055	0.344
2056	0.321
2057	0.297
2058	0.272
2059	0.248
2060	0.223
2061	0.198
2062	0.174
2063	0.148
2064	0.123
2065	0.098
2066	0.072
2067	0.047
2068	0.023
2069	-0.002
2070	-0.025
2071	-0.049
2072	-0.071
2073	-0.092
2074	-0.112
2075	-0.13
2076	-0.148
2077	-0.165
2078	-0.18
2079	-0.195
2080	-0.209
2081	-0.222
2082	-0.234
2083	-0.245
2084	-0.255
2085	-0.264
2086	-0.273
2087	-0.28
2088	-0.288
2089	-0.295
2090	-0.303
2091	-0.309
2092	-0.315
2093	-0.321
2094	-0.327
2095	-0.333
2096	-0.338
2097	-0.343
2098	-0.349
2099	-0.356