Year	Percent
1950	4.09421
1955	4.1163
1960	4.24219
1965	4.37721
1970	4.34503
1975	4.40277
1980	4.45513
1985	4.68314
1990	5.52285
1995	5.80642
2000	6.00616
2005	6.17477
2010	6.46662
2015	7.19298
2020	7.93776
2025	8.70541
2030	9.68973
2035	11.019
2040	12.74615
2045	14.77485
2050	16.88616
2055	19.31549
2060	21.81897
2065	24.26841
2070	26.2419
2075	28.04852
2080	29.78299
2085	31.39514
2090	32.84233
2095	34.11135
2100	35.23951