Year	Percent
1950	6.35094
1955	6.1088
1960	5.45467
1965	5.11622
1970	4.93977
1975	5.04517
1980	3.98662
1985	4.21906
1990	4.01131
1995	4.07031
2000	3.79665
2005	4.61905
2010	5.05527
2015	6.68108
2020	9.17858
2025	12.0907
2030	15.25493
2035	18.57012
2040	21.95369
2045	25.3767
2050	28.17601
2055	29.86718
2060	31.50729
2065	32.59448
2070	33.1152
2075	33.9276
2080	34.6874
2085	35.31783
2090	35.81578
2095	36.20831
2100	36.53637