Year	Percent
1950	14.02871
1955	14.10146
1960	14.24062
1965	14.01048
1970	14.29143
1975	14.45283
1980	12.2506
1985	13.13122
1990	13.72356
1995	14.30116
2000	12.51894
2005	12.02026
2010	13.48758
2015	13.92548
2020	12.46916
2025	12.17379
2030	11.57528
2035	11.59908
2040	14.29239
2045	15.7039
2050	17.64066
2055	19.34576
2060	19.97411
2065	21.10685
2070	22.02499
2075	22.78305
2080	23.48207
2085	23.93989
2090	24.17522
2095	24.32429
2100	24.44952