Year	Percent
1950	12.08589
1955	12.08985
1960	13.58666
1965	12.94104
1970	12.71317
1975	12.84529
1980	13.53736
1985	14.24347
1990	15.06023
1995	14.65476
2000	14.63263
2005	13.90044
2010	13.42013
2015	13.54051
2020	13.48641
2025	12.94707
2030	12.28137
2035	11.6498
2040	11.18174
2045	10.80619
2050	10.41314
2055	9.97847
2060	9.51274
2065	9.08442
2070	8.72604
2075	8.3926
2080	8.0799
2085	7.74456
2090	7.41842
2095	7.11155
2100	6.8473