Year	Percent
1950	10.22873
1955	10.7766
1960	11.28808
1965	11.89352
1970	12.3661
1975	13.37709
1980	14.26246
1985	13.57408
1990	11.87167
1995	11.07745
2000	12.11344
2005	14.19514
2010	16.99005
2015	19.17344
2020	20.89214
2025	24.42129
2030	28.6585
2035	31.37291
2040	31.32401
2045	28.42492
2050	25.31124
2055	24.3502
2060	25.16465
2065	26.09739
2070	25.65096
2075	23.84625
2080	22.28394
2085	21.83185
2090	22.30716
2095	22.83399
2100	22.73416