Year	Percent
1950	10.92251
1955	8.84912
1960	8.8571
1965	8.621
1970	8.4459
1975	9.22206
1980	9.85973
1985	9.40197
1990	10.10808
1995	8.06166
2000	9.01438
2005	8.27979
2010	7.50828
2015	6.21456
2020	6.04583
2025	6.9038
2030	7.29983
2035	7.20801
2040	6.42053
2045	5.99839
2050	5.91534
2055	5.95709
2060	6.03792
2065	6.01575
2070	5.86322
2075	5.6889
2080	5.60127
2085	5.59573
2090	5.61374
2095	5.59607
2100	5.53126