Year	Percent
1950	12.70401
1955	12.603
1960	12.82087
1965	13.58646
1970	14.45683
1975	15.25365
1980	15.4131
1985	15.91821
1990	18.02037
1995	18.16216
2000	18.55553
2005	19.22925
2010	21.05164
2015	22.05899
2020	23.4
2025	25.24681
2030	26.89459
2035	27.83348
2040	28.51799
2045	29.30844
2050	30.15259
2055	30.7702
2060	31.03282
2065	31.09999
2070	31.68998
2075	32.40482
2080	33.08728
2085	33.68565
2090	34.15601
2095	34.60392
2100	35.12925