Year	Percent
1950	10.31522
1955	10.85132
1960	11.14977
1965	10.81843
1970	10.38103
1975	10.99041
1980	12.31231
1985	11.87977
1990	11.37059
1995	12.24691
2000	13.39693
2005	14.10862
2010	13.15979
2015	12.11776
2020	11.10786
2025	10.09931
2030	9.69687
2035	9.5077
2040	9.97123
2045	10.95662
2050	12.1247
2055	13.32421
2060	14.33469
2065	15.28275
2070	16.29408
2075	17.362
2080	18.45928
2085	19.52312
2090	20.51702
2095	21.41983
2100	22.21381