Year	Percent
1950	4.99718
1955	5.00059
1960	5.00683
1965	4.91805
1970	4.89253
1975	4.90917
1980	4.87108
1985	4.97811
1990	5.66539
1995	6.18253
2000	6.85124
2005	7.54591
2010	8.30902
2015	9.18747
2020	10.23638
2025	11.67253
2030	13.29145
2035	15.0421
2040	17.07597
2045	19.0701
2050	21.27074
2055	23.38676
2060	25.19835
2065	26.87228
2070	28.49268
2075	30.1718
2080	31.6542
2085	32.91853
2090	33.98268
2095	34.89221
2100	35.68733