Year	Percent
1950	11.93481
1955	12.22971
1960	12.41768
1965	11.74027
1970	11.69091
1975	11.9821
1980	11.63792
1985	12.56861
1990	12.37307
1995	13.06918
2000	12.85879
2005	13.06449
2010	13.75415
2015	13.15567
2020	12.14715
2025	11.69511
2030	11.21615
2035	10.71065
2040	10.12211
2045	9.54362
2050	8.9801
2055	8.49307
2060	8.04317
2065	7.6236
2070	7.23437
2075	6.88914
2080	6.58134
2085	6.3238
2090	6.09861
2095	5.90951
2100	5.73525