Year	Percent
1950	5.4045
1955	5.18761
1960	4.92453
1965	4.77951
1970	5.04487
1975	4.90887
1980	5.12808
1985	5.22727
1990	5.66672
1995	6.33662
2000	6.97253
2005	6.54215
2010	5.82964
2015	5.46257
2020	6.39067
2025	8.02663
2030	10.1305
2035	12.67384
2040	15.72016
2045	21.63169
2050	29.47687
2055	35.33865
2060	37.93484
2065	38.67134
2070	39.03641
2075	39.83558
2080	40.31768
2085	40.1971
2090	39.66768
2095	39.28138
2100	39.4107