Year	Percent
1950	8.34127
1955	7.33555
1960	6.70849
1965	6.96054
1970	7.42969
1975	8.32167
1980	8.20495
1985	8.70948
1990	10.39751
1995	10.70674
2000	11.23698
2005	10.98394
2010	11.57058
2015	13.64765
2020	15.4786
2025	17.5571
2030	18.0161
2035	18.91418
2040	20.81561
2045	24.32543
2050	29.70756
2055	32.75412
2060	33.32253
2065	32.7197
2070	32.65394
2075	33.18773
2080	33.41911
2085	33.48977
2090	33.52233
2095	33.49514
2100	33.59326