Year	Percent
1950	10.47883
1955	10.2199
1960	10.16346
1965	11.77835
1970	11.68094
1975	11.43599
1980	11.38328
1985	11.93971
1990	12.26464
1995	12.44424
2000	12.6571
2005	12.99698
2010	13.22159
2015	13.25166
2020	13.12295
2025	12.91394
2030	12.63067
2035	12.29399
2040	11.91678
2045	11.48518
2050	11.03707
2055	10.58176
2060	10.13724
2065	9.71716
2070	9.33238
2075	8.97231
2080	8.62673
2085	8.28917
2090	7.97978
2095	7.68187
2100	7.39537