Year	Percent
1950	10.32625
1955	10.32939
1960	10.22052
1965	10.05061
1970	9.94004
1975	10.18875
1980	10.49428
1985	10.56694
1990	11.03217
1995	11.35648
2000	11.25678
2005	11.07935
2010	11.03156
2015	11.26697
2020	11.34417
2025	10.97925
2030	10.69886
2035	10.59677
2040	10.49878
2045	10.33249
2050	10.09721
2055	9.84222
2060	9.62371
2065	9.42519
2070	9.23566
2075	9.00423
2080	8.77924
2085	8.56197
2090	8.36118
2095	8.16853
2100	7.96904