Year	Percent
1950	4.04638
1955	3.85078
1960	3.71748
1965	3.67349
1970	4.24176
1975	4.14831
1980	4.16321
1985	4.46292
1990	5.288
1995	5.20462
2000	5.04855
2005	5.18747
2010	5.74832
2015	6.4678
2020	7.06179
2025	8.15064
2030	9.01337
2035	9.91769
2040	10.95232
2045	12.36721
2050	13.9469
2055	15.01675
2060	16.36151
2065	17.51446
2070	19.11211
2075	20.51029
2080	21.90827
2085	23.27006
2090	24.60042
2095	25.91363
2100	27.19631