Year	Percent
1950	10.45458
1955	10.58805
1960	10.69198
1965	10.91118
1970	9.79644
1975	10.21775
1980	10.69418
1985	10.96883
1990	10.92104
1995	10.86596
2000	10.94156
2005	10.92216
2010	10.95421
2015	10.71849
2020	10.31315
2025	10.46911
2030	10.61559
2035	10.1507
2040	9.67619
2045	9.32722
2050	9.12421
2055	8.97023
2060	8.82647
2065	8.6122
2070	8.33619
2075	8.08339
2080	7.88672
2085	7.71261
2090	7.53704
2095	7.34516
2100	7.14474