Year	Percent
1950	13.05041
1955	13.06705
1960	13.41177
1965	14.26813
1970	14.9462
1975	14.6762
1980	13.46486
1985	13.06923
1990	15.53961
1995	15.83486
2000	16.00562
2005	16.59725
2010	17.00773
2015	17.49924
2020	19.17859
2025	21.28477
2030	23.7925
2035	25.2341
2040	26.12208
2045	27.08736
2050	27.64012
2055	28.05378
2060	28.47252
2065	28.78764
2070	29.02927
2075	29.47527
2080	30.13301
2085	30.83176
2090	31.52039
2095	32.20847
2100	32.88849