Year	Percent
1950	13.84121
1955	13.7709
1960	13.59188
1965	13.34053
1970	13.15267
1975	12.96093
1980	12.76462
1985	12.5939
1990	12.34137
1995	12.322
2000	12.2967
2005	12.36721
2010	12.54374
2015	12.70361
2020	13.12594
2025	13.60765
2030	14.2129
2035	14.97389
2040	15.84077
2045	16.64736
2050	17.36487
2055	18.07229
2060	18.73423
2065	19.43748
2070	20.13028
2075	20.74034
2080	21.28359
2085	21.79303
2090	22.27851
2095	22.72337
2100	23.13529