Year	Percent
1950	6.21145
1955	4.55206
1960	7.30684
1965	7.30147
1970	7.23415
1975	7.49187
1980	7.62098
1985	7.87035
1990	10.55992
1995	10.84808
2000	10.59611
2005	10.46809
2010	12.78416
2015	13.84258
2020	15.97317
2025	18.98638
2030	22.21722
2035	25.36512
2040	28.28904
2045	31.52578
2050	34.32473
2055	37.84833
2060	40.86084
2065	42.52741
2070	43.03674
2075	43.42592
2080	43.67552
2085	43.69583
2090	43.53838
2095	43.21079
2100	42.83726