Year	Percent
1950	10.90263
1955	11.44481
1960	11.70796
1965	11.58262
1970	11.3015
1975	11.58999
1980	12.32162
1985	12.27432
1990	12.13822
1995	12.40158
2000	12.79447
2005	12.96572
2010	12.34567
2015	11.70145
2020	11.08899
2025	10.49543
2030	10.20187
2035	10.13644
2040	10.55162
2045	11.35721
2050	12.37164
2055	13.43995
2060	14.42191
2065	15.39665
2070	16.43118
2075	17.51259
2080	18.60869
2085	19.65865
2090	20.62699
2095	21.49523
2100	22.25087