Year	Percent
1950	11.32912
1955	7.26095
1960	5.07923
1965	9.18579
1970	10.75393
1975	12.63925
1980	11.67368
1985	8.63828
1990	7.83805
1995	6.94056
2000	7.06055
2005	6.82256
2010	6.73105
2015	5.56264
2020	3.99642
2025	4.41119
2030	4.604
2035	5.42858
2040	5.71892
2045	5.6617
2050	5.00871
2055	4.6144
2060	4.6846
2065	5.03335
2070	5.3823
2075	5.52769
2080	5.38238
2085	5.08299
2090	4.88256
2095	4.88617
2100	5.01558