Year	Percent
1950	26.97233
1955	26.16669
1960	25.55684
1965	25.01334
1970	24.58307
1975	25.07529
1980	26.22683
1985	27.55511
1990	29.34828
1995	31.58163
2000	32.79352
2005	33.19745
2010	33.5737
2015	32.90399
2020	32.47888
2025	31.99857
2030	31.06555
2035	30.06985
2040	28.91198
2045	27.74501
2050	26.65899
2055	25.41968
2060	24.28369
2065	23.34581
2070	22.62706
2075	22.07956
2080	21.6279
2085	21.25192
2090	20.94621
2095	20.7147
2100	20.5715