Year	Percent
1950	10.6657
1955	10.60512
1960	10.36773
1965	11.84752
1970	11.76533
1975	11.52186
1980	11.2332
1985	11.38414
1990	11.75585
1995	12.05053
2000	12.26198
2005	12.41615
2010	12.3834
2015	12.3581
2020	12.27592
2025	12.01659
2030	11.72779
2035	11.41094
2040	11.0745
2045	10.69972
2050	10.30173
2055	9.91677
2060	9.5349
2065	9.15802
2070	8.80827
2075	8.47124
2080	8.15423
2085	7.84818
2090	7.56402
2095	7.28422
2100	7.02401