Year	Percent
1950	9.49939
1955	8.81244
1960	10.43822
1965	12.83539
1970	10.66085
1975	11.83757
1980	13.19692
1985	11.46792
1990	8.41904
1995	8.40599
2000	10.18405
2005	7.53949
2010	5.76105
2015	5.39944
2020	5.4953
2025	5.68287
2030	5.36386
2035	4.90802
2040	4.62658
2045	4.53722
2050	4.60361
2055	4.72621
2060	4.77933
2065	4.73933
2070	4.68103
2075	4.66654
2080	4.72755
2085	4.81502
2090	4.8546
2095	4.82523
2100	4.76398