Year	Percent
1950	8.42838
1955	9.62843
1960	10.73111
1965	9.93774
1970	7.4091
1975	9.6533
1980	9.19581
1985	9.12328
1990	7.85382
1995	7.96152
2000	5.88422
2005	5.45871
2010	5.44274
2015	5.5908
2020	5.26798
2025	5.15688
2030	5.04724
2035	4.9456
2040	4.92473
2045	4.98014
2050	4.99727
2055	4.96426
2060	4.93373
2065	4.9169
2070	4.92808
2075	4.95443
2080	4.97496
2085	4.96156
2090	4.92918
2095	4.89158
2100	4.87526