Year	Percent
1950	1.308
1951	1.181
1952	0.955
1953	0.786
1954	0.676
1955	0.619
1956	0.611
1957	0.656
1958	0.75
1959	0.879
1960	1.039
1961	1.202
1962	1.348
1963	1.461
1964	1.53
1965	1.592
1966	1.647
1967	1.657
1968	1.593
1969	1.452
1970	1.269
1971	1.09
1972	0.975
1973	0.966
1974	1.06
1975	1.218
1976	1.376
1977	1.479
1978	1.51
1979	1.48
1980	1.401
1981	1.324
1982	1.298
1983	1.349
1984	1.476
1985	1.64
1986	1.793
1987	1.875
1988	1.844
1989	1.712
1990	1.521
1991	1.335
1992	1.202
1993	1.157
1994	1.197
1995	1.277
1996	1.356
1997	1.383
1998	1.334
1999	1.214
2000	1.05
2001	0.889
2002	0.785
2003	0.773
2004	0.844
2005	0.963
2006	1.08
2007	1.14
2008	1.104
2009	0.983
2010	0.815
2011	0.649
2012	0.523
2013	0.452
2014	0.438
2015	0.45
2016	0.46
2017	0.462
2018	0.448
2019	0.426
2020	0.402
2021	0.374
2022	0.35
2023	0.331
2024	0.308
2025	0.282
2026	0.257
2027	0.236
2028	0.209
2029	0.184
2030	0.157
2031	0.126
2032	0.1
2033	0.073
2034	0.042
2035	0.012
2036	-0.015
2037	-0.043
2038	-0.071
2039	-0.097
2040	-0.123
2041	-0.146
2042	-0.168
2043	-0.194
2044	-0.217
2045	-0.238
2046	-0.259
2047	-0.279
2048	-0.302
2049	-0.324
2050	-0.343
2051	-0.359
2052	-0.378
2053	-0.4
2054	-0.419
2055	-0.439
2056	-0.459
2057	-0.478
2058	-0.496
2059	-0.516
2060	-0.533
2061	-0.551
2062	-0.571
2063	-0.588
2064	-0.607
2065	-0.624
2066	-0.64
2067	-0.657
2068	-0.674
2069	-0.691
2070	-0.707
2071	-0.723
2072	-0.739
2073	-0.754
2074	-0.767
2075	-0.781
2076	-0.797
2077	-0.812
2078	-0.823
2079	-0.833
2080	-0.844
2081	-0.852
2082	-0.86
2083	-0.87
2084	-0.873
2085	-0.877
2086	-0.878
2087	-0.877
2088	-0.874
2089	-0.87
2090	-0.873
2091	-0.868
2092	-0.857
2093	-0.847
2094	-0.838
2095	-0.828
2096	-0.812
2097	-0.796
2098	-0.781
2099	-0.762