Year	Percent
1950	11.15576
1955	10.82675
1960	10.42084
1965	10.7271
1970	9.71904
1975	12.62742
1980	12.12651
1985	10.942
1990	7.35745
1995	7.00043
2000	7.84557
2005	6.89437
2010	6.29329
2015	5.54704
2020	5.07513
2025	5.30957
2030	5.15149
2035	5.00714
2040	4.79369
2045	4.6138
2050	4.54803
2055	4.60561
2060	4.69068
2065	4.72385
2070	4.69494
2075	4.64892
2080	4.62499
2085	4.64667
2090	4.68655
2095	4.69491
2100	4.67033