Year	Percent
1950	3.94752
1955	3.95007
1960	4.29958
1965	2.53765
1970	3.9
1975	3.47644
1980	3.37897
1985	3.4124
1990	3.4546
1995	3.47772
2000	3.39905
2005	2.90353
2010	3.14694
2015	3.75361
2020	4.79728
2025	6.27986
2030	8.28361
2035	10.93454
2040	13.75527
2045	15.21405
2050	16.41938
2055	17.91101
2060	21.28746
2065	25.15628
2070	29.00174
2075	33.15895
2080	36.3861
2085	37.90525
2090	38.31664
2095	38.42897
2100	38.15589