Year	Percent
1950	6.78917
1955	6.06624
1960	5.60013
1965	5.39733
1970	5.34138
1975	5.44188
1980	5.50995
1985	5.51785
1990	5.9977
1995	6.08932
2000	6.23344
2005	6.48363
2010	6.55732
2015	6.59725
2020	7.04133
2025	7.7239
2030	8.46652
2035	9.24147
2040	10.19319
2045	11.39559
2050	12.93157
2055	14.3895
2060	15.66857
2065	16.61212
2070	17.87139
2075	19.43009
2080	20.92924
2085	22.2466
2090	23.3858
2095	24.46533
2100	25.60763