Year	Percent
1950	26.95138
1955	27.08288
1960	27.21236
1965	27.3311
1970	27.26112
1975	27.51322
1980	27.76826
1985	28.01418
1990	28.18651
1995	28.56124
2000	28.84855
2005	29.74877
2010	30.95072
2015	30.89534
2020	31.18183
2025	30.49857
2030	30.37144
2035	30.56159
2040	30.29481
2045	30.17864
2050	29.42374
2055	28.93721
2060	28.47408
2065	28.07425
2070	27.68487
2075	27.24644
2080	26.76263
2085	26.24227
2090	25.71704
2095	25.20395
2100	24.69956