Year	Percent
1950	10.14745
1955	9.89121
1960	9.67627
1965	9.92058
1970	10.697
1975	10.45488
1980	10.61485
1985	10.88118
1990	11.0175
1995	10.75555
2000	11.08985
2005	12.17481
2010	12.43987
2015	10.90725
2020	10.0241
2025	9.88448
2030	9.40828
2035	8.92228
2040	8.34621
2045	7.80476
2050	7.34323
2055	6.95315
2060	6.6135
2065	6.31604
2070	6.06178
2075	5.85139
2080	5.69694
2085	5.57729
2090	5.47088
2095	5.37802
2100	5.30018