Year	Percent
1950	13.35271
1955	12.20589
1960	11.10602
1965	11.18399
1970	11.84241
1975	12.08699
1980	11.4622
1985	10.39307
1990	10.20395
1995	11.26576
2000	11.69985
2005	12.87866
2010	12.85912
2015	13.02683
2020	13.86089
2025	15.57432
2030	17.96196
2035	18.90556
2040	19.8433
2045	20.43145
2050	21.35647
2055	22.98372
2060	24.06969
2065	24.65341
2070	24.85021
2075	25.12402
2080	25.54791
2085	25.97277
2090	26.15525
2095	26.01061
2100	25.66314