Year	Percent
1950	13.47591
1955	13.46521
1960	13.48707
1965	13.59131
1970	13.76194
1975	14.00272
1980	14.22874
1985	14.39409
1990	14.40515
1995	12.48084
2000	12.89552
2005	14.03359
2010	16.04019
2015	18.07297
2020	20.61072
2025	24.1022
2030	27.03949
2035	29.22387
2040	29.80402
2045	28.88033
2050	27.65492
2055	26.59307
2060	26.12466
2065	25.90383
2070	25.39994
2075	24.84737
2080	24.09268
2085	23.47394
2090	23.12963
2095	22.99846
2100	22.91568