Year	Percent
1950	5.18002
1955	4.89631
1960	5.05448
1965	5.08877
1970	5.23142
1975	5.39558
1980	5.53616
1985	5.66926
1990	6.3348
1995	6.78934
2000	7.36625
2005	7.82043
2010	8.39466
2015	9.51588
2020	10.72608
2025	12.016
2030	13.35894
2035	14.83913
2040	16.48611
2045	18.46913
2050	20.53609
2055	22.48473
2060	24.38301
2065	26.2049
2070	27.85341
2075	29.05078
2080	30.19771
2085	31.28449
2090	32.30601
2095	33.18991
2100	33.91506