Year	Percent
1950	27.85186
1955	27.57562
1960	24.94488
1965	24.20927
1970	23.58724
1975	23.4181
1980	24.43225
1985	23.34391
1990	23.88904
1995	24.44032
2000	25.89616
2005	27.69388
2010	27.40021
2015	26.94335
2020	26.13723
2025	25.37587
2030	24.82197
2035	24.50015
2040	23.85414
2045	23.08482
2050	22.73567
2055	22.572
2060	22.90873
2065	23.1765
2070	23.014
2075	22.74245
2080	22.44954
2085	22.29438
2090	22.27204
2095	22.28173
2100	22.18344