Year	Percent
1950	10.09023
1955	10.03579
1960	9.77888
1965	9.65406
1970	9.71094
1975	9.63676
1980	9.88888
1985	10.07381
1990	10.26592
1995	10.64046
2000	11.26558
2005	11.3628
2010	10.93788
2015	10.55551
2020	10.74977
2025	10.96321
2030	10.8673
2035	10.52425
2040	10.18871
2045	9.90082
2050	9.68297
2055	9.44713
2060	9.22301
2065	8.97424
2070	8.70791
2075	8.44502
2080	8.21676
2085	8.01373
2090	7.80087
2095	7.58656
2100	7.37078