Year	Percent
1950	28.11413
1955	26.85447
1960	25.93999
1965	25.25177
1970	24.42114
1975	22.3701
1980	25.91181
1985	27.19512
1990	28.71775
1995	27.58483
2000	28.28247
2005	27.96967
2010	27.91711
2015	31.131
2020	34.6255
2025	34.82118
2030	33.95421
2035	31.91723
2040	30.31488
2045	29.90301
2050	30.21798
2055	30.23846
2060	29.22765
2065	27.61662
2070	26.17366
2075	25.44714
2080	25.42062
2085	25.50275
2090	25.12349
2095	24.22803
2100	23.20162