Year	Percent
1950	11.70505
1955	11.37155
1960	11.59451
1965	12.14236
1970	12.24441
1975	12.65619
1980	12.69707
1985	12.33175
1990	12.23803
1995	11.50311
2000	11.32442
2005	10.71351
2010	9.82
2015	9.23014
2020	8.82794
2025	8.63721
2030	8.14162
2035	7.62815
2040	7.161
2045	6.77492
2050	6.4737
2055	6.22515
2060	5.97922
2065	5.73474
2070	5.52249
2075	5.3565
2080	5.23261
2085	5.13617
2090	5.05421
2095	4.97712
2100	4.90737