Year	Percent
1950	29.64794
1955	29.17545
1960	28.54826
1965	27.83098
1970	27.07269
1975	27.55577
1980	27.69773
1985	27.50956
1990	27.21775
1995	26.5008
2000	26.36914
2005	26.74663
2010	27.41243
2015	28.18532
2020	28.88949
2025	29.57075
2030	30.24016
2035	30.77082
2040	31.16304
2045	31.35822
2050	31.35015
2055	31.21571
2060	30.94309
2065	30.57484
2070	30.14327
2075	29.66477
2080	29.17009
2085	28.65877
2090	28.1387
2095	27.62157
2100	27.10485