Year	Percent
1950	14.04135
1955	13.9173
1960	13.83486
1965	13.82404
1970	13.93146
1975	13.93203
1980	13.55799
1985	12.79917
1990	11.87677
1995	11.385
2000	10.92343
2005	10.77624
2010	10.92228
2015	11.32398
2020	12.15975
2025	13.36898
2030	14.52978
2035	15.45662
2040	16.1307
2045	16.72772
2050	17.64958
2055	18.83144
2060	19.88673
2065	20.69697
2070	21.19195
2075	21.52016
2080	21.95834
2085	22.46181
2090	22.9423
2095	23.30901
2100	23.55139