Year	Percent
1950	7.87267
1955	10.57964
1960	14.41662
1965	14.3642
1970	13.37721
1975	8.12663
1980	7.87735
1985	5.68174
1990	8.81219
1995	8.85937
2000	7.34814
2005	4.88678
2010	3.21071
2015	3.53927
2020	4.73443
2025	5.41128
2030	5.18242
2035	4.68181
2040	4.19945
2045	4.05668
2050	4.25481
2055	4.5798
2060	4.79682
2065	4.82049
2070	4.7261
2075	4.64831
2080	4.66844
2085	4.7749
2090	4.87973
2095	4.90142
2100	4.84653