Year	Percent
1950	18.44206
1955	17.64621
1960	17.13932
1965	16.73524
1970	16.3477
1975	16.32625
1980	15.85058
1985	15.2027
1990	14.48507
1995	14.37002
2000	13.53101
2005	12.89658
2010	13.27082
2015	13.5468
2020	12.98103
2025	12.57119
2030	14.35403
2035	17.99572
2040	21.43068
2045	23.32708
2050	24.02557
2055	23.68095
2060	23.19646
2065	23.2345
2070	23.3821
2075	23.74278
2080	24.1203
2085	24.5089
2090	24.86696
2095	25.15718
2100	25.36749