Year	Percent
1950	13.79165
1955	10.84724
1960	7.85544
1965	8.3807
1970	8.4831
1975	9.57166
1980	10.45197
1985	9.66053
1990	9.12121
1995	7.88093
2000	7.93559
2005	8.41631
2010	8.97153
2015	8.99456
2020	8.34876
2025	7.56809
2030	7.18897
2035	7.02889
2040	6.93558
2045	6.74248
2050	6.44514
2055	6.12454
2060	5.85239
2065	5.67585
2070	5.56677
2075	5.45766
2080	5.31849
2085	5.1667
2090	5.03585
2095	4.96005
2100	4.91991