Year	Percent
1950	8.25501
1955	9.07421
1960	10.96928
1965	12.42718
1970	10.98946
1975	8.6824
1980	8.30798
1985	8.11515
1990	8.56344
1995	8.52611
2000	6.5366
2005	5.23846
2010	5.13267
2015	5.96692
2020	6.76457
2025	6.57663
2030	6.17715
2035	5.66966
2040	5.47315
2045	5.73616
2050	6.12557
2055	6.26302
2060	6.07723
2065	5.78049
2070	5.61331
2075	5.65582
2080	5.81152
2085	5.88614
2090	5.80085
2095	5.6231
2100	5.47102