Year	Percent
1950	1.385
1951	1.461
1952	1.602
1953	1.726
1954	1.833
1955	1.924
1956	1.998
1957	2.058
1958	2.105
1959	2.139
1960	2.166
1961	2.19
1962	2.217
1963	2.25
1964	2.29
1965	2.333
1966	2.376
1967	2.422
1968	2.476
1969	2.535
1970	2.595
1971	2.653
1972	2.711
1973	2.775
1974	2.842
1975	2.872
1976	2.855
1977	2.874
1978	3
1979	3.2
1980	3.452
1981	3.663
1982	3.584
1983	3.037
1984	2.087
1985	0.98
1986	-0.035
1987	-0.841
1988	-1.377
1989	-1.592
1990	-1.7
1991	-1.809
1992	-1.478
1993	-0.244
1994	1.798
1995	4.244
1996	6.439
1997	7.603
1998	7.397
1999	6.142
2000	4.485
2001	3
2002	2.049
2003	1.82
2004	2.274
2005	3.045
2006	3.717
2007	4.082
2008	4.079
2009	3.748
2010	3.283
2011	2.872
2012	2.587
2013	2.441
2014	2.429
2015	2.478
2016	2.517
2017	2.532
2018	2.532
2019	2.515
2020	2.492
2021	2.475
2022	2.462
2023	2.448
2024	2.432
2025	2.415
2026	2.397
2027	2.379
2028	2.359
2029	2.338
2030	2.316
2031	2.293
2032	2.27
2033	2.245
2034	2.22
2035	2.194
2036	2.168
2037	2.142
2038	2.115
2039	2.088
2040	2.061
2041	2.034
2042	2.006
2043	1.979
2044	1.951
2045	1.924
2046	1.896
2047	1.869
2048	1.843
2049	1.817
2050	1.792
2051	1.767
2052	1.742
2053	1.717
2054	1.691
2055	1.666
2056	1.64
2057	1.615
2058	1.59
2059	1.566
2060	1.542
2061	1.518
2062	1.493
2063	1.469
2064	1.445
2065	1.42
2066	1.396
2067	1.371
2068	1.347
2069	1.323
2070	1.299
2071	1.275
2072	1.251
2073	1.227
2074	1.204
2075	1.181
2076	1.157
2077	1.134
2078	1.111
2079	1.087
2080	1.064
2081	1.041
2082	1.018
2083	0.996
2084	0.973
2085	0.952
2086	0.93
2087	0.908
2088	0.887
2089	0.865
2090	0.844
2091	0.823
2092	0.802
2093	0.782
2094	0.762
2095	0.743
2096	0.724
2097	0.706
2098	0.688
2099	0.67