Year	Percent
1950	8.89042
1955	10.31105
1960	10.63985
1965	10.78886
1970	10.05586
1975	8.41385
1980	7.72929
1985	7.36705
1990	7.45917
1995	7.68054
2000	7.69047
2005	6.94562
2010	6.91931
2015	6.75212
2020	6.21393
2025	6.27304
2030	6.31197
2035	6.2286
2040	6.08964
2045	5.95617
2050	5.85801
2055	5.81996
2060	5.82547
2065	5.80049
2070	5.72548
2075	5.63726
2080	5.56632
2085	5.53422
2090	5.51756
2095	5.49602
2100	5.456