Year	Percent
1950	8.5762
1955	9.18884
1960	9.08242
1965	9.72943
1970	12.76692
1975	12.48068
1980	12.22901
1985	12.60682
1990	14.97054
1995	15.25941
2000	15.45495
2005	16.37864
2010	17.29556
2015	18.99228
2020	21.21505
2025	23.45955
2030	25.80688
2035	27.97203
2040	30.45054
2045	32.87268
2050	34.85849
2055	36.48582
2060	37.71789
2065	38.57235
2070	39.37034
2075	39.8613
2080	40.10595
2085	40.0897
2090	40.03345
2095	40.0482
2100	40.16619