Year	Percent
1950	6.83464
1955	5.45851
1960	4.9058
1965	4.7167
1970	5.13537
1975	5.14501
1980	5.1772
1985	5.08781
1990	5.52143
1995	5.60489
2000	6.06229
2005	6.80014
2010	7.54391
2015	8.6887
2020	10.16275
2025	11.72104
2030	13.06702
2035	14.59061
2040	16.37959
2045	19.08469
2050	22.3632
2055	25.39574
2060	27.52938
2065	28.84
2070	29.67716
2075	30.54641
2080	31.51204
2085	32.5358
2090	33.42592
2095	34.07662
2100	34.53775