Year	Percent
1950	10.36603
1955	12.24513
1960	6.37204
1965	7.43526
1970	9.75414
1975	11.93477
1980	11.17157
1985	8.61166
1990	7.38307
1995	7.86598
2000	9.09225
2005	9.65642
2010	8.10283
2015	5.52349
2020	5.09182
2025	5.8902
2030	6.16647
2035	5.63423
2040	5.01704
2045	4.5529
2050	4.42176
2055	4.61754
2060	4.83176
2065	4.81432
2070	4.59882
2075	4.41462
2080	4.40494
2085	4.5596
2090	4.73454
2095	4.79019
2100	4.70942