Year	Percent
1950	15.98336
1955	16.0217
1960	15.65198
1965	15.4334
1970	15.2648
1975	15.39849
1980	15.6328
1985	15.58372
1990	15.67061
1995	16.42542
2000	17.29794
2005	18.44261
2010	19.61763
2015	20.65367
2020	21.78632
2025	23.17157
2030	24.54126
2035	25.62027
2040	26.4827
2045	26.94305
2050	27.11512
2055	26.88483
2060	26.61073
2065	26.29146
2070	26.00631
2075	25.96047
2080	25.72376
2085	25.37682
2090	25.00023
2095	24.68869
2100	24.45844