Year % of children ages 12-23 months 1980 76 1981 72 1982 73 1983 73 1984 83 1985 72 1986 70 1987 67 1988 69 1989 80 1990 90 1991 81 1992 81 1993 83 1994 84 1995 89 1996 88 1997 86 1998 81 1999 88 2000 90 2001 90 2002 90 2003 90 2004 89 2005 89 2006 89 2007 88 2008 89 2009 92 2010 93 2011 95 2012 93 2013 92 2014 93 2015 92 2016 92 2017 94 2018 93 2019 92 2020 92 2021 90 2022 89