Year	Percent
1950	3.67213
1955	3.14905
1960	3.20054
1965	3.19712
1970	3.41992
1975	3.85201
1980	4.13425
1985	4.74787
1990	5.39027
1995	5.63065
2000	5.933
2005	6.16274
2010	6.37786
2015	7.04681
2020	8.20567
2025	9.47577
2030	11.01092
2035	12.06064
2040	12.54437
2045	12.73519
2050	12.90297
2055	14.07121
2060	15.69987
2065	17.44563
2070	20.07061
2075	22.16815
2080	23.65578
2085	24.96075
2090	26.33244
2095	27.95421
2100	29.67298