Year	Percent
1950	1.39623
1955	1.59822
1960	1.91465
1965	2.32971
1970	2.64241
1975	2.82688
1980	2.97555
1985	3.28066
1990	3.70764
1995	3.7602
2000	3.67143
2005	3.70489
2010	3.79644
2015	4.00615
2020	4.29423
2025	4.51822
2030	4.1854
2035	3.92203
2040	3.79258
2045	3.68734
2050	3.63882
2055	3.72163
2060	4.14514
2065	4.797
2070	5.53233
2075	6.32684
2080	7.18425
2085	8.12369
2090	9.15091
2095	10.27198
2100	11.48709