Year	Percent
1950	10.19842
1955	10.0278
1960	10.03969
1965	10.63247
1970	10.73343
1975	10.59487
1980	10.69042
1985	10.76764
1990	10.87531
1995	11.06056
2000	12.33094
2005	13.02491
2010	12.67788
2015	11.36109
2020	10.45199
2025	10.46574
2030	10.42717
2035	10.20981
2040	9.6333
2045	9.03755
2050	8.59418
2055	8.28391
2060	7.97754
2065	7.62465
2070	7.25618
2075	6.92711
2080	6.66746
2085	6.46437
2090	6.2847
2095	6.11757
2100	5.95181