Year	Percent
1950	9.42299
1955	8.5819
1960	8.37847
1965	8.10959
1970	8.22106
1975	7.49713
1980	6.18012
1985	5.89424
1990	6.36385
1995	6.68744
2000	6.46909
2005	6.04512
2010	6.09752
2015	5.82837
2020	5.90108
2025	5.881
2030	5.77413
2035	5.64297
2040	5.53332
2045	5.46404
2050	5.43988
2055	5.43306
2060	5.40157
2065	5.33811
2070	5.26108
2075	5.19271
2080	5.14608
2085	5.10741
2090	5.07109
2095	5.01647
2100	4.95274