Year	Percent
1950	6.29911
1955	5.85183
1960	5.47847
1965	5.15693
1970	4.95816
1975	4.84698
1980	4.60968
1985	4.34833
1990	4.42438
1995	4.68188
2000	4.51318
2005	4.46054
2010	4.64723
2015	4.80632
2020	5.03472
2025	5.42053
2030	5.79114
2035	6.17733
2040	7.17577
2045	8.66337
2050	10.5638
2055	12.70811
2060	14.48855
2065	16.17963
2070	18.00309
2075	20.03856
2080	22.08113
2085	24.03282
2090	25.86024
2095	27.56426
2100	29.1292