Year	Percent
1950	10.80585
1955	11.55542
1960	11.07464
1965	9.184
1970	7.2133
1975	7.50873
1980	7.63913
1985	8.11363
1990	7.80961
1995	5.43084
2000	4.39538
2005	4.83591
2010	5.55888
2015	6.50173
2020	6.17979
2025	5.68905
2030	5.13811
2035	4.99575
2040	5.36621
2045	5.84116
2050	6.01213
2055	5.83039
2060	5.54047
2065	5.40281
2070	5.50903
2075	5.72551
2080	5.84063
2085	5.76613
2090	5.56933
2095	5.40458
2100	5.36837