Year	Percent
1950	1.708
1951	1.759
1952	1.868
1953	1.986
1954	2.102
1955	2.207
1956	2.294
1957	2.357
1958	2.391
1959	2.398
1960	2.384
1961	2.362
1962	2.347
1963	2.348
1964	2.365
1965	2.388
1966	2.402
1967	2.389
1968	2.335
1969	2.245
1970	2.135
1971	2.027
1972	1.94
1973	1.886
1974	1.863
1975	1.857
1976	1.849
1977	1.824
1978	1.773
1979	1.699
1980	1.613
1981	1.528
1982	1.463
1983	1.427
1984	1.42
1985	1.425
1986	1.426
1987	1.41
1988	1.371
1989	1.308
1990	1.238
1991	1.172
1992	1.097
1993	0.998
1994	0.881
1995	0.751
1996	0.625
1997	0.538
1998	0.518
1999	0.566
2000	0.649
2001	0.733
2002	0.793
2003	0.815
2004	0.798
2005	0.762
2006	0.728
2007	0.696
2008	0.663
2009	0.629
2010	0.594
2011	0.557
2012	0.52
2013	0.485
2014	0.453
2015	0.422
2016	0.392
2017	0.363
2018	0.339
2019	0.319
2020	0.302
2021	0.285
2022	0.266
2023	0.242
2024	0.214
2025	0.184
2026	0.153
2027	0.126
2028	0.102
2029	0.082
2030	0.063
2031	0.045
2032	0.026
2033	0.007
2034	-0.013
2035	-0.033
2036	-0.053
2037	-0.075
2038	-0.098
2039	-0.123
2040	-0.15
2041	-0.177
2042	-0.204
2043	-0.232
2044	-0.261
2045	-0.29
2046	-0.318
2047	-0.345
2048	-0.37
2049	-0.391
2050	-0.411
2051	-0.429
2052	-0.447
2053	-0.463
2054	-0.478
2055	-0.491
2056	-0.504
2057	-0.515
2058	-0.525
2059	-0.535
2060	-0.544
2061	-0.552
2062	-0.559
2063	-0.566
2064	-0.572
2065	-0.578
2066	-0.584
2067	-0.59
2068	-0.596
2069	-0.603
2070	-0.61
2071	-0.618
2072	-0.626
2073	-0.634
2074	-0.642
2075	-0.651
2076	-0.66
2077	-0.669
2078	-0.677
2079	-0.686
2080	-0.694
2081	-0.703
2082	-0.711
2083	-0.719
2084	-0.727
2085	-0.734
2086	-0.742
2087	-0.749
2088	-0.756
2089	-0.763
2090	-0.769
2091	-0.775
2092	-0.781
2093	-0.786
2094	-0.791
2095	-0.795
2096	-0.798
2097	-0.801
2098	-0.803
2099	-0.805