Year	Percent
1950	10.42638
1955	14.33664
1960	13.40334
1965	11.23095
1970	6.85552
1975	11.82272
1980	10.18516
1985	13.09498
1990	12.00961
1995	7.94581
2000	8.54952
2005	8.33694
2010	8.57151
2015	8.10157
2020	7.58115
2025	6.82496
2030	6.62256
2035	6.6821
2040	6.69681
2045	6.5367
2050	6.23317
2055	5.94466
2060	5.81429
2065	5.83727
2070	5.85621
2075	5.77679
2080	5.61222
2085	5.45592
2090	5.37024
2095	5.36356
2100	5.37523