Year	Percent
1950	5.78749
1955	5.68406
1960	5.58852
1965	5.45757
1970	5.51775
1975	5.35271
1980	5.20963
1985	5.03506
1990	5.49715
1995	5.9229
2000	6.27818
2005	6.72973
2010	7.17566
2015	8.04532
2020	8.84697
2025	9.66408
2030	10.51443
2035	11.46292
2040	12.59469
2045	14.17018
2050	15.9223
2055	17.49145
2060	18.86811
2065	20.12456
2070	21.46091
2075	23.00342
2080	24.45798
2085	25.75396
2090	26.88611
2095	27.8985
2100	28.83689