Year	Percent
1950	14.29973
1955	14.03054
1960	13.9034
1965	13.60995
1970	14.17471
1975	14.49582
1980	12.39837
1985	13.26477
1990	13.78643
1995	14.34114
2000	12.49322
2005	11.94193
2010	13.36649
2015	13.8335
2020	12.47564
2025	12.23471
2030	11.68614
2035	11.69492
2040	14.34161
2045	15.74799
2050	17.67864
2055	19.39574
2060	20.02042
2065	21.1285
2070	22.00532
2075	22.71233
2080	23.36885
2085	23.7905
2090	23.99661
2095	24.12202
2100	24.22894