Year	Percent
1950	8.44792
1955	9.4221
1960	7.68959
1965	9.12298
1970	10.25002
1975	13.14635
1980	12.80268
1985	11.47778
1990	10.1794
1995	10.22756
2000	11.36501
2005	12.60865
2010	10.53456
2015	8.95517
2020	7.7093
2025	8.02536
2030	8.24355
2035	7.95665
2040	7.1417
2045	6.29004
2050	5.84438
2055	5.80792
2060	5.83115
2065	5.67295
2070	5.35038
2075	5.02284
2080	4.87467
2085	4.91024
2090	4.98541
2095	4.97334
2100	4.84759