Year	Percent
1950	10.43354
1955	10.51103
1960	10.34286
1965	10.67823
1970	11.12334
1975	11.54516
1980	11.73306
1985	11.68381
1990	12.06753
1995	12.30603
2000	12.32415
2005	12.17882
2010	12.48393
2015	13.30274
2020	13.13717
2025	12.4352
2030	11.55905
2035	11.47028
2040	11.40998
2045	11.05587
2050	10.45127
2055	9.8545
2060	9.3862
2065	9.01931
2070	8.69443
2075	8.34363
2080	7.98256
2085	7.62373
2090	7.30697
2095	7.05102
2100	6.82681