Year	Percent
1950	11.47359
1955	11.93807
1960	12.69853
1965	11.73265
1970	11.67913
1975	12.30347
1980	12.92681
1985	12.64489
1990	13.37221
1995	13.3773
2000	14.17691
2005	14.4329
2010	12.90473
2015	12.17532
2020	11.88974
2025	11.73094
2030	11.1431
2035	10.43493
2040	9.75928
2045	9.17571
2050	8.64816
2055	8.16426
2060	7.70513
2065	7.2327
2070	6.80261
2075	6.44523
2080	6.15079
2085	5.92084
2090	5.74183
2095	5.59574
2100	5.47647