Year	Percent
1950	27.67835
1955	28.11206
1960	28.32431
1965	28.39151
1970	28.21474
1975	27.57427
1980	27.07744
1985	26.7217
1990	26.55719
1995	26.60952
2000	26.71371
2005	26.71195
2010	26.59312
2015	26.55243
2020	26.7341
2025	27.32592
2030	28.29968
2035	29.42071
2040	30.39381
2045	31.08346
2050	31.5022
2055	31.70393
2060	31.78877
2065	31.68084
2070	31.34971
2075	30.83354
2080	30.18989
2085	29.5263
2090	28.84143
2095	28.14022
2100	27.43594