Year	Percent
1950	5.03684
1955	4.92426
1960	5.51477
1965	5.55427
1970	5.72856
1975	5.59653
1980	5.33329
1985	5.0587
1990	5.61928
1995	5.90506
2000	6.68843
2005	7.39761
2010	8.11547
2015	9.13373
2020	10.26175
2025	11.81402
2030	13.64466
2035	15.75327
2040	18.36183
2045	21.27086
2050	23.86461
2055	25.69023
2060	26.2682
2065	26.44345
2070	27.75541
2075	30.05793
2080	31.81488
2085	33.01677
2090	33.79577
2095	34.42091
2100	35.11511