Year	Percent
1950	11.52256
1955	10.93227
1960	10.72003
1965	8.47506
1970	10.127
1975	11.25784
1980	11.43901
1985	12.08397
1990	10.44695
1995	9.1077
2000	10.06107
2005	10.58808
2010	9.21168
2015	8.40784
2020	7.88154
2025	6.94979
2030	6.99902
2035	6.59238
2040	6.1811
2045	5.92355
2050	5.6944
2055	5.5062
2060	5.36863
2065	5.25014
2070	5.13377
2075	5.01942
2080	4.93182
2085	4.87026
2090	4.82628
2095	4.78513
2100	4.74803