Year	Percent
1950	10.23445
1955	8.77997
1960	8.3049
1965	8.50249
1970	8.15183
1975	7.37288
1980	6.3448
1985	5.33581
1990	5.9125
1995	6.7174
2000	6.57801
2005	6.19891
2010	6.06679
2015	5.35204
2020	5.49517
2025	5.77836
2030	5.89012
2035	5.7904
2040	5.60863
2045	5.44826
2050	5.41345
2055	5.50101
2060	5.5759
2065	5.55023
2070	5.43408
2075	5.30169
2080	5.22515
2085	5.21387
2090	5.22678
2095	5.21434
2100	5.14819