Year % of children ages 12-23 months 1980 40.29894764039666 1981 47.92264132290935 1982 47.521343673930176 1983 46.49812385601053 1984 51.28662443533591 1985 59.37850744465974 1986 60.97755141669047 1987 59.54666128678311 1988 65.59780503370393 1989 69.66943325923317 1990 76.04594423830032 1991 80.64671789494678 1992 83.62602332844457 1993 82.7349597485798 1994 81.40557179174795 1995 88.01313019368556 1996 84.87251989434654 1997 89.54065903169565 1998 90.57495018108094 1999 92.55292367052375 2000 93.98646731464225 2001 94.51054521929106 2002 94.08661939722451 2003 94.55892771912639 2004 93.74984357591437 2005 93.66791312830497 2006 95.21596403343106 2007 94.540031334608 2008 95.03428910474274 2009 95.08120304831304 2010 94.34755065224293 2011 95.15434538430142 2012 95.87731388830164 2013 92.31563974931618 2014 92.91503614295226 2015 93.11685738414486 2016 92.80178926986646 2017 85.38759812546185 2018 92.09643597031662 2019 85.42413607615455 2020 83.09587169554062 2021 82.11367481551987 2022 81.38730359448834