Year	Percent
1950	14.95395
1955	13.36206
1960	12.25661
1965	12.28172
1970	13.2899
1975	13.99094
1980	13.81286
1985	12.50463
1990	11.39223
1995	12.65615
2000	15.30995
2005	18.83124
2010	20.89287
2015	21.12454
2020	21.24245
2025	22.0558
2030	23.42367
2035	24.93656
2040	25.4436
2045	25.16741
2050	24.85064
2055	24.98094
2060	25.41333
2065	25.61045
2070	25.40875
2075	24.52058
2080	23.84257
2085	23.47523
2090	23.33427
2095	23.2288
2100	23.00116