Year	Percent
1950	11.54132
1955	7.65742
1960	8.29206
1965	10.19612
1970	11.84315
1975	10.40317
1980	8.2174
1985	7.99256
1990	7.85883
1995	8.57315
2000	8.65952
2005	6.807
2010	5.33837
2015	5.15179
2020	6.00619
2025	6.83806
2030	6.68592
2035	6.29096
2040	5.75884
2045	5.53519
2050	5.78726
2055	6.18224
2060	6.33142
2065	6.14782
2070	5.84092
2075	5.65801
2080	5.68634
2085	5.83307
2090	5.90699
2095	5.82799
2100	5.65708