Year	Percent
1950	11.2552
1955	11.51952
1960	11.26476
1965	11.38703
1970	11.81653
1975	12.18686
1980	12.43759
1985	12.68984
1990	13.11363
1995	12.95647
2000	12.98011
2005	12.5688
2010	13.58435
2015	13.70947
2020	13.34734
2025	12.07756
2030	11.45937
2035	10.72696
2040	10.10671
2045	9.5204
2050	8.94
2055	8.35561
2060	7.80564
2065	7.34456
2070	6.9674
2075	6.64867
2080	6.38957
2085	6.16327
2090	5.96922
2095	5.81659
2100	5.69947