Year	Percent
1950	10.69345
1955	8.77716
1960	7.05171
1965	6.26113
1970	6.03812
1975	5.93714
1980	5.20492
1985	5.51094
1990	8.46933
1995	11.10193
2000	13.49764
2005	12.71518
2010	13.08909
2015	13.78425
2020	16.18106
2025	18.10675
2030	18.7337
2035	19.31521
2040	20.55219
2045	23.01271
2050	26.61233
2055	29.16306
2060	30.35129
2065	31.22268
2070	33.08885
2075	35.25607
2080	36.64088
2085	37.19628
2090	37.16869
2095	36.96816
2100	36.95391