Year	Percent
1950	11.42374
1955	11.09619
1960	10.92073
1965	12.29491
1970	12.47411
1975	12.82688
1980	11.8536
1985	11.01301
1990	11.91299
1995	13.4752
2000	14.77267
2005	13.78009
2010	12.139
2015	11.76022
2020	12.45897
2025	12.77365
2030	12.73138
2035	12.17659
2040	11.51621
2045	11.18204
2050	11.08257
2055	10.91984
2060	10.56811
2065	10.11266
2070	9.69025
2075	9.39123
2080	9.17013
2085	8.91974
2090	8.60896
2095	8.25193
2100	7.95179