Year	Percent
1950	26.50022
1955	28.43317
1960	27.26853
1965	26.86522
1970	25.13542
1975	24.94085
1980	25.86653
1985	26.5585
1990	29.16347
1995	27.6205
2000	27.11108
2005	29.25352
2010	28.64123
2015	27.12222
2020	27.45602
2025	28.64903
2030	30.68601
2035	30.65617
2040	29.71296
2045	28.54119
2050	27.68795
2055	27.74499
2060	28.30197
2065	28.38234
2070	27.68933
2075	26.59306
2080	25.67789
2085	25.27416
2090	25.24975
2095	25.18137
2100	24.73765