Year	Percent
1950	1.54256
1955	1.89052
1960	2.36889
1965	2.72301
1970	3.00866
1975	3.19371
1980	3.34285
1985	3.55776
1990	3.91337
1995	4.00671
2000	4.00385
2005	4.06306
2010	4.09085
2015	4.13305
2020	4.24027
2025	4.34259
2030	4.17343
2035	4.04115
2040	4.0048
2045	4.0075
2050	4.05068
2055	4.22039
2060	4.65061
2065	5.27673
2070	6.01274
2075	6.83598
2080	7.7488
2085	8.76529
2090	9.88576
2095	11.10616
2100	12.41671