Year Percent 1950 10.32996 1955 10.34903 1960 10.36173 1965 10.48858 1970 10.04968 1975 10.2262 1980 10.2997 1985 10.41994 1990 10.58334 1995 10.73619 2000 10.81383 2005 10.75884 2010 10.63289 2015 10.31547 2020 10.78646 2025 10.7846 2030 10.7897 2035 10.51418 2040 10.28232 2045 10.12256 2050 9.96928 2055 9.75667 2060 9.50149 2065 9.21951 2070 8.95465 2075 8.71582 2080 8.47127 2085 8.2363 2090 7.99445 2095 7.75536 2100 7.53249