Year	Percent
1950	11.11238
1955	11.42665
1960	11.27249
1965	10.42287
1970	10.46834
1975	10.79044
1980	11.24465
1985	11.95458
1990	12.37624
1995	12.76442
2000	12.53696
2005	12.35285
2010	12.50973
2015	12.72127
2020	12.72724
2025	12.13046
2030	11.63759
2035	11.16405
2040	10.6818
2045	10.19023
2050	9.71872
2055	9.25877
2060	8.84196
2065	8.4724
2070	8.11476
2075	7.80183
2080	7.51537
2085	7.26724
2090	7.0537
2095	6.87875
2100	6.73376