Year	Percent
1950	10.00298
1955	9.77951
1960	9.68939
1965	11.24078
1970	10.90943
1975	11.20049
1980	11.89189
1985	9.99657
1990	10.8384
1995	12.13332
2000	10.75954
2005	9.8466
2010	9.41936
2015	9.23575
2020	9.36176
2025	9.51107
2030	9.5409
2035	9.53031
2040	9.35322
2045	9.06194
2050	8.75411
2055	8.50202
2060	8.23415
2065	7.97445
2070	7.72087
2075	7.46487
2080	7.22846
2085	6.98972
2090	6.77508
2095	6.56352
2100	6.36481