Year	Percent
1950	8.63491
1955	7.40347
1960	7.83359
1965	8.83254
1970	8.38588
1975	6.95639
1980	6.0142
1985	6.35833
1990	6.69091
1995	6.58012
2000	6.02777
2005	5.72874
2010	6.1663
2015	6.18211
2020	6.0413
2025	5.82266
2030	5.53507
2035	5.38239
2040	5.4138
2045	5.4891
2050	5.48165
2055	5.39259
2060	5.27649
2065	5.19325
2070	5.1714
2075	5.1779
2080	5.1663
2085	5.11505
2090	5.03451
2095	4.95635
2100	4.90608