Year	Percent
1950	14.56676
1955	14.67659
1960	14.81533
1965	15.2352
1970	16.11287
1975	14.96505
1980	13.30674
1985	13.10779
1990	12.73133
1995	12.57246
2000	11.5934
2005	10.7212
2010	10.14008
2015	9.67692
2020	9.19778
2025	8.66136
2030	8.13606
2035	7.67826
2040	7.26469
2045	6.9085
2050	6.59944
2055	6.30768
2060	6.0531
2065	5.82873
2070	5.64137
2075	5.48582
2080	5.35574
2085	5.24562
2090	5.15472
2095	5.07574
2100	5.0168