Year	Percent
1950	14.98525
1955	16.51112
1960	16.75801
1965	16.88182
1970	17.01675
1975	17.20768
1980	17.15367
1985	16.60897
1990	15.61114
1995	15.27387
2000	15.40458
2005	14.81624
2010	14.05234
2015	13.14788
2020	12.48958
2025	11.94476
2030	11.43253
2035	10.9445
2040	10.454
2045	9.99344
2050	9.56005
2055	9.18734
2060	8.84376
2065	8.51706
2070	8.20897
2075	7.90554
2080	7.6296
2085	7.36831
2090	7.12669
2095	6.91054
2100	6.70906