Year	Percent
1950	7.32241
1955	5.80058
1960	5.08549
1965	4.92978
1970	5.10123
1975	5.50916
1980	5.9833
1985	6.6996
1990	8.2305
1995	9.08053
2000	9.60925
2005	10.97768
2010	12.74311
2015	14.97511
2020	17.61803
2025	20.15266
2030	22.49494
2035	24.60996
2040	27.21479
2045	29.50975
2050	31.14504
2055	32.52198
2060	33.69569
2065	35.33684
2070	37.17079
2075	38.4453
2080	39.36242
2085	40.02009
2090	40.60849
2095	41.27377
2100	41.9502