Year	Percent
1950	8.40436
1955	8.80871
1960	9.77356
1965	10.00879
1970	11.32683
1975	12.18321
1980	12.61659
1985	9.84563
1990	9.59732
1995	9.90048
2000	11.48014
2005	9.95256
2010	7.68381
2015	6.51393
2020	6.6647
2025	7.13875
2030	7.16753
2035	6.57945
2040	6.02984
2045	5.75234
2050	5.80182
2055	5.99799
2060	6.08496
2065	5.97044
2070	5.76834
2075	5.6423
2080	5.64599
2085	5.72685
2090	5.7721
2095	5.72357
2100	5.60984