Year	Percent
1950	12.14965
1955	14.19289
1960	15.90516
1965	16.48649
1970	17.0773
1975	17.12158
1980	13.50547
1985	10.73573
1990	11.65806
1995	11.70497
2000	10.98607
2005	10.68538
2010	9.8338
2015	9.20754
2020	8.90177
2025	8.44215
2030	7.98917
2035	7.56465
2040	7.20237
2045	6.88982
2050	6.64354
2055	6.43248
2060	6.24637
2065	6.06404
2070	5.89818
2075	5.7558
2080	5.63171
2085	5.53912
2090	5.45286
2095	5.3752
2100	5.29778