Year	Percent
1950	12.2255
1955	12.26177
1960	13.61547
1965	12.98099
1970	12.77825
1975	12.94167
1980	13.9345
1985	14.57351
1990	15.35346
1995	14.91019
2000	14.8975
2005	14.18313
2010	13.68942
2015	13.76992
2020	13.684
2025	13.1119
2030	12.42921
2035	11.78614
2040	11.31626
2045	10.94192
2050	10.55226
2055	10.13105
2060	9.67639
2065	9.25746
2070	8.90869
2075	8.58591
2080	8.286
2085	7.9602
2090	7.63886
2095	7.3356
2100	7.07324