Year	Percent
1950	9.47905
1955	9.63079
1960	10.3455
1965	11.65673
1970	13.30232
1975	14.58153
1980	14.07201
1985	15.56693
1990	19.26795
1995	21.34951
2000	22.14248
2005	23.0962
2010	25.32182
2015	27.07744
2020	28.28166
2025	29.23246
2030	30.21929
2035	31.93485
2040	33.82169
2045	34.97677
2050	36.43828
2055	36.59111
2060	35.2476
2065	34.20309
2070	34.16824
2075	34.13407
2080	34.30791
2085	34.58866
2090	34.77125
2095	34.84671
2100	35.05126