Year	Percent
1950	11.91256
1955	12.34815
1960	12.42443
1965	11.41802
1970	8.77667
1975	7.64867
1980	7.30924
1985	7.14251
1990	6.97133
1995	6.77354
2000	5.83481
2005	5.31644
2010	5.50952
2015	5.40661
2020	5.29967
2025	5.1425
2030	4.97675
2035	4.82966
2040	4.81918
2045	4.89804
2050	4.96641
2055	4.9831
2060	4.95349
2065	4.91249
2070	4.88804
2075	4.89411
2080	4.90481
2085	4.90381
2090	4.8764
2095	4.83322
2100	4.79285