Year	Percent
1950	6.86399
1955	6.49157
1960	6.58883
1965	6.98646
1970	7.86868
1975	8.49583
1980	8.04391
1985	7.24311
1990	9.67187
1995	10.0402
2000	10.76949
2005	10.32971
2010	10.3064
2015	11.66796
2020	13.7963
2025	16.75341
2030	18.78307
2035	20.72279
2040	22.76094
2045	24.98349
2050	27.05338
2055	29.19905
2060	31.2608
2065	32.91552
2070	34.73998
2075	36.24236
2080	37.54813
2085	38.55604
2090	39.31417
2095	39.89858
2100	40.43472