Year	Percent
1950	8.3313
1955	7.91844
1960	9.18817
1965	7.96049
1970	7.28385
1975	6.75462
1980	6.54247
1985	5.66139
1990	6.21732
1995	5.94821
2000	6.35031
2005	5.91649
2010	6.74162
2015	8.16372
2020	9.84506
2025	11.39251
2030	13.33941
2035	15.25021
2040	16.81153
2045	17.84216
2050	18.37522
2055	19.2383
2060	20.40352
2065	21.74749
2070	23.19991
2075	24.54866
2080	25.80438
2085	27.06394
2090	28.37862
2095	29.70055
2100	30.98353