Year	Percent
1950	11.90985
1955	12.63224
1960	13.08698
1965	11.35219
1970	11.60402
1975	11.932
1980	12.21836
1985	12.40135
1990	12.28277
1995	12.11297
2000	13.041
2005	13.14975
2010	12.98335
2015	12.82441
2020	12.94659
2025	12.00082
2030	11.75677
2035	11.43365
2040	11.03497
2045	10.56088
2050	10.10074
2055	9.66686
2060	9.24849
2065	8.86658
2070	8.49822
2075	8.14943
2080	7.81369
2085	7.4896
2090	7.18685
2095	6.90307
2100	6.62877