Year	Percent
1950	6.17887
1955	6.19779
1960	5.94771
1965	5.54681
1970	5.36156
1975	5.29049
1980	5.2726
1985	6.05582
1990	6.32721
1995	6.04816
2000	6.07717
2005	6.26655
2010	6.30504
2015	6.93358
2020	7.81202
2025	9.0821
2030	10.3964
2035	10.8981
2040	11.49238
2045	12.40671
2050	13.50303
2055	14.33037
2060	15.3928
2065	15.55041
2070	16.7831
2075	18.05861
2080	19.35233
2085	20.56582
2090	21.57502
2095	22.4375
2100	23.38237