Year	Percent
1950	12.36814
1955	12.43847
1960	13.64448
1965	13.02201
1970	12.84538
1975	13.04047
1980	14.35479
1985	14.921
1990	15.66123
1995	15.17732
2000	15.17421
2005	14.479
2010	13.96955
2015	14.00705
2020	13.8875
2025	13.28124
2030	12.5806
2035	11.92555
2040	11.45384
2045	11.08064
2050	10.69447
2055	10.28726
2060	9.84407
2065	9.43497
2070	9.09644
2075	8.78522
2080	8.49907
2085	8.18386
2090	7.86812
2095	7.56927
2100	7.30933