Year	Percent
1950	5.23495
1955	5.19802
1960	5.43512
1965	5.28584
1970	5.10687
1975	4.77616
1980	4.48462
1985	4.21329
1990	4.79704
1995	5.35801
2000	6.11513
2005	6.68934
2010	7.50122
2015	8.74918
2020	9.90991
2025	11.30753
2030	12.89964
2035	14.72828
2040	17.07876
2045	19.75796
2050	22.18852
2055	23.97465
2060	24.61966
2065	24.88788
2070	26.32365
2075	28.76116
2080	30.61173
2085	31.87287
2090	32.67253
2095	33.28977
2100	33.95682