Year	Percent
1950	8.90815
1955	7.77323
1960	7.8698
1965	8.59138
1970	10.12869
1975	9.40903
1980	8.17673
1985	7.26289
1990	8.19776
1995	8.90581
2000	8.34087
2005	7.66782
2010	6.6949
2015	5.33094
2020	4.82806
2025	5.20115
2030	5.29532
2035	5.28659
2040	5.14351
2045	4.85292
2050	4.61191
2055	4.63283
2060	4.83676
2065	5.01017
2070	5.06114
2075	5.00249
2080	4.90504
2085	4.86972
2090	4.93061
2095	5.01949
2100	5.06168