Year	Percent
1950	10.74199
1955	11.76029
1960	11.90041
1965	12.47312
1970	12.41631
1975	12.51488
1980	12.70302
1985	12.65434
1990	12.77168
1995	12.98474
2000	13.23189
2005	13.46725
2010	13.43923
2015	13.53396
2020	13.40297
2025	13.0921
2030	12.77574
2035	12.4543
2040	12.10755
2045	11.69548
2050	11.2364
2055	10.77986
2060	10.33617
2065	9.91222
2070	9.49451
2075	9.08266
2080	8.69216
2085	8.32436
2090	7.97656
2095	7.65251
2100	7.34716