Year	Percent
1950	10.21097
1955	10.15923
1960	10.09849
1965	9.92924
1970	10.33541
1975	10.47458
1980	10.36923
1985	10.50311
1990	11.67178
1995	10.63294
2000	10.87795
2005	10.67233
2010	10.78291
2015	11.05794
2020	11.31703
2025	11.29114
2030	11.09553
2035	10.7943
2040	10.65146
2045	10.51623
2050	10.32011
2055	10.04247
2060	9.73628
2065	9.42175
2070	9.12185
2075	8.83646
2080	8.55488
2085	8.28768
2090	8.02375
2095	7.77544
2100	7.5343