Year	Percent
1950	6.59822
1955	6.18379
1960	5.56634
1965	5.0577
1970	4.64257
1975	4.33858
1980	4.20416
1985	4.22844
1990	4.7089
1995	4.84458
2000	4.78881
2005	4.94238
2010	5.0918
2015	6.36071
2020	7.57699
2025	8.29815
2030	9.34259
2035	10.56595
2040	12.2811
2045	14.29279
2050	16.05078
2055	17.57296
2060	19.81535
2065	22.37348
2070	24.95031
2075	27.2007
2080	28.89487
2085	30.39371
2090	31.76546
2095	33.06099
2100	34.28662