Year	Percent
1950	10.62796
1955	10.48276
1960	9.80575
1965	8.98927
1970	8.936
1975	9.13185
1980	9.08388
1985	9.18098
1990	9.57165
1995	10.20819
2000	10.20295
2005	10.21823
2010	10.5806
2015	10.91577
2020	10.62752
2025	10.39141
2030	10.50834
2035	10.56605
2040	10.44157
2045	10.25153
2050	10.08134
2055	9.91647
2060	9.74697
2065	9.56213
2070	9.36383
2075	9.19006
2080	9.01214
2085	8.84154
2090	8.65777
2095	8.48908
2100	8.31129