Year	Percent
1950	9.96108
1955	9.91919
1960	9.67713
1965	9.56301
1970	9.59217
1975	9.52085
1980	9.77571
1985	9.97215
1990	10.17779
1995	10.55045
2000	11.1788
2005	11.27765
2010	10.85849
2015	10.49185
2020	10.69844
2025	10.91084
2030	10.81138
2035	10.46313
2040	10.1342
2045	9.8407
2050	9.60853
2055	9.36353
2060	9.12221
2065	8.85861
2070	8.58299
2075	8.31345
2080	8.07584
2085	7.86425
2090	7.64499
2095	7.42692
2100	7.2111