Year	Percent
1950	8.39192
1955	9.03932
1960	8.56511
1965	8.86245
1970	11.72176
1975	11.08754
1980	10.536
1985	10.66492
1990	12.21425
1995	12.48425
2000	12.71136
2005	13.52714
2010	14.87442
2015	16.42945
2020	18.3677
2025	20.48741
2030	22.33677
2035	24.11538
2040	26.14672
2045	28.24992
2050	30.56844
2055	32.64163
2060	34.56049
2065	35.99873
2070	36.78074
2075	37.39967
2080	37.70249
2085	37.68802
2090	37.59249
2095	37.56974
2100	37.6884