Year	Percent
1950	10.74438
1955	5.50359
1960	7.83929
1965	8.77168
1970	9.04225
1975	7.78708
1980	6.15904
1985	6.40813
1990	6.69112
1995	7.39051
2000	7.59461
2005	5.28586
2010	4.08969
2015	4.3854
2020	5.04107
2025	5.96224
2030	5.74975
2035	5.33908
2040	4.83548
2045	4.69214
2050	5.03065
2055	5.48736
2060	5.68073
2065	5.54843
2070	5.30131
2075	5.17926
2080	5.27387
2085	5.46624
2090	5.56794
2095	5.50624
2100	5.34217