Year	Percent
1950	10.30719
1955	7.88135
1960	7.42807
1965	6.67652
1970	6.98138
1975	7.3395
1980	6.66957
1985	6.01418
1990	7.24839
1995	7.49597
2000	8.22813
2005	8.24289
2010	7.90036
2015	7.95829
2020	8.58859
2025	10.16601
2030	11.55307
2035	12.60906
2040	14.01039
2045	16.15863
2050	19.07627
2055	22.31136
2060	25.20769
2065	27.59853
2070	29.60879
2075	31.23666
2080	32.73686
2085	34.02935
2090	35.0623
2095	35.86951
2100	36.51426