Year	Percent
1950	10.34252
1955	10.54695
1960	10.69931
1965	10.65625
1970	10.28363
1975	10.30495
1980	10.39272
1985	10.43991
1990	10.4181
1995	10.40258
2000	10.49103
2005	10.48097
2010	10.42673
2015	10.35174
2020	10.6479
2025	11.02368
2030	11.1921
2035	11.01734
2040	10.80096
2045	10.63255
2050	10.44142
2055	10.18519
2060	9.84106
2065	9.4683
2070	9.11149
2075	8.76607
2080	8.45954
2085	8.13324
2090	7.81548
2095	7.51536
2100	7.21764