Year	Percent
1950	10.67053
1955	11.62007
1960	11.77827
1965	12.43831
1970	12.36004
1975	12.43746
1980	12.60356
1985	12.54681
1990	12.63688
1995	12.80921
2000	13.04121
2005	13.28832
2010	13.28811
2015	13.38014
2020	13.24469
2025	12.94779
2030	12.66858
2035	12.34778
2040	12.0042
2045	11.59242
2050	11.12657
2055	10.66398
2060	10.21474
2065	9.78942
2070	9.37362
2075	8.9657
2080	8.57919
2085	8.21479
2090	7.86973
2095	7.5478
2100	7.24495