Year	Percent
1950	8.31089
1955	7.19416
1960	5.96518
1965	5.0219
1970	4.50706
1975	4.16216
1980	4.04005
1985	4.17422
1990	4.75841
1995	5.16653
2000	5.51233
2005	5.67288
2010	5.59859
2015	6.00773
2020	6.46789
2025	7.6975
2030	10.14464
2035	13.26357
2040	16.4828
2045	18.96749
2050	20.82295
2055	21.89988
2060	22.64723
2065	23.52981
2070	24.86816
2075	26.6428
2080	28.07852
2085	29.13108
2090	29.83562
2095	30.3731
2100	30.97402