Year	Percent
1950	11.74006
1955	11.41953
1960	12.82245
1965	13.47276
1970	14.09493
1975	14.65344
1980	14.92265
1985	15.25487
1990	15.40709
1995	15.25202
2000	15.2534
2005	14.96177
2010	14.69896
2015	14.50161
2020	14.14482
2025	13.63258
2030	13.17273
2035	12.72326
2040	12.27294
2045	11.83618
2050	11.38874
2055	10.95437
2060	10.56162
2065	10.18567
2070	9.8516
2075	9.5089
2080	9.19301
2085	8.88724
2090	8.61066
2095	8.33701
2100	8.06682