Year	Percent
1950	6.21695
1955	5.86256
1960	7.08454
1965	6.79773
1970	6.76902
1975	7.39301
1980	7.79418
1985	8.49078
1990	11.98653
1995	11.56896
2000	9.43298
2005	9.90898
2010	9.58874
2015	10.75674
2020	12.90506
2025	15.99258
2030	20.53433
2035	23.49064
2040	24.62036
2045	26.13624
2050	27.48912
2055	28.88398
2060	30.03407
2065	31.05372
2070	31.93437
2075	32.79408
2080	33.68272
2085	34.52105
2090	35.25652
2095	35.83141
2100	36.27893