Year	Percent
1950	1.907
1951	2.052
1952	2.3
1953	2.475
1954	2.597
1955	2.682
1956	2.746
1957	2.803
1958	2.861
1959	2.921
1960	2.976
1961	3.012
1962	3.011
1963	2.959
1964	2.865
1965	2.749
1966	2.634
1967	2.537
1968	2.464
1969	2.416
1970	2.38
1971	2.345
1972	2.307
1973	2.269
1974	2.231
1975	2.196
1976	2.164
1977	2.135
1978	2.108
1979	2.083
1980	2.034
1981	1.958
1982	1.924
1983	1.991
1984	2.138
1985	2.346
1986	2.539
1987	2.502
1988	2.076
1989	1.303
1990	0.334
1991	-0.627
1992	-1.328
1993	-1.567
1994	-1.316
1995	-0.776
1996	-0.221
1997	0.186
1998	0.363
1999	0.293
2000	0.11
2001	-0.047
2002	-0.183
2003	-0.342
2004	-0.514
2005	-0.706
2006	-0.906
2007	-1.037
2008	-1.024
2009	-0.862
2010	-0.611
2011	-0.35
2012	-0.131
2013	0.013
2014	0.075
2015	0.095
2016	0.117
2017	0.137
2018	0.14
2019	0.131
2020	0.108
2021	0.077
2022	0.043
2023	0.015
2024	-0.006
2025	-0.025
2026	-0.048
2027	-0.075
2028	-0.105
2029	-0.138
2030	-0.172
2031	-0.207
2032	-0.242
2033	-0.278
2034	-0.314
2035	-0.351
2036	-0.387
2037	-0.421
2038	-0.454
2039	-0.483
2040	-0.51
2041	-0.537
2042	-0.562
2043	-0.584
2044	-0.605
2045	-0.624
2046	-0.641
2047	-0.657
2048	-0.671
2049	-0.682
2050	-0.692
2051	-0.701
2052	-0.71
2053	-0.719
2054	-0.729
2055	-0.739
2056	-0.749
2057	-0.759
2058	-0.77
2059	-0.781
2060	-0.793
2061	-0.806
2062	-0.819
2063	-0.833
2064	-0.848
2065	-0.864
2066	-0.881
2067	-0.897
2068	-0.914
2069	-0.931
2070	-0.948
2071	-0.966
2072	-0.982
2073	-0.996
2074	-1.01
2075	-1.022
2076	-1.033
2077	-1.044
2078	-1.054
2079	-1.063
2080	-1.071
2081	-1.078
2082	-1.084
2083	-1.089
2084	-1.093
2085	-1.095
2086	-1.096
2087	-1.096
2088	-1.094
2089	-1.091
2090	-1.086
2091	-1.08
2092	-1.072
2093	-1.062
2094	-1.051
2095	-1.038
2096	-1.024
2097	-1.007
2098	-0.988
2099	-0.968