Year	Percent
1950	12.65667
1955	12.67499
1960	12.77771
1965	12.88486
1970	12.8812
1975	12.7671
1980	11.90443
1985	11.42705
1990	10.878
1995	10.21405
2000	9.64314
2005	9.16747
2010	9.26869
2015	9.80231
2020	10.56804
2025	11.35628
2030	12.09975
2035	12.91841
2040	13.84354
2045	14.97021
2050	16.18792
2055	17.35818
2060	18.47946
2065	19.50016
2070	20.44286
2075	21.30372
2080	22.0502
2085	22.67605
2090	23.18905
2095	23.61666
2100	23.97614