Year	Percent
1950	9.96754
1955	9.96412
1960	9.99817
1965	10.12584
1970	9.69416
1975	9.66783
1980	8.98806
1985	8.48802
1990	8.46506
1995	8.49138
2000	8.74731
2005	8.95628
2010	8.63898
2015	6.64413
2020	5.69101
2025	6.07399
2030	6.29373
2035	6.56578
2040	6.18589
2045	5.59772
2050	5.1926
2055	5.04421
2060	5.11176
2065	5.21503
2070	5.17857
2075	5.00141
2080	4.79695
2085	4.68862
2090	4.70282
2095	4.77173
2100	4.80983