Year	Percent
1950	2.005
1955	2.26369
1960	2.47221
1965	2.65268
1970	2.8208
1975	3.61428
1980	4.4059
1985	5.26284
1990	6.68675
1995	7.31515
2000	8.29916
2005	9.23789
2010	11.1431
2015	13.18319
2020	15.25423
2025	17.83638
2030	19.97083
2035	21.64075
2040	22.59616
2045	23.44287
2050	24.78419
2055	26.60992
2060	28.54912
2065	30.3885
2070	31.85014
2075	33.19544
2080	34.51092
2085	35.79524
2090	36.93818
2095	37.87984
2100	38.64241