Year	Percent
1950	9.37405
1955	7.01546
1960	6.70308
1965	6.07835
1970	6.46008
1975	6.87827
1980	6.3494
1985	5.6813
1990	6.77863
1995	6.91548
2000	7.36395
2005	7.20952
2010	6.65686
2015	6.72661
2020	7.338
2025	8.83487
2030	10.17617
2035	11.36555
2040	12.90515
2045	15.27293
2050	18.23102
2055	21.25554
2060	23.95521
2065	26.16384
2070	28.03965
2075	29.60711
2080	31.12533
2085	32.49837
2090	33.64553
2095	34.56286
2100	35.29701