Year % of children ages 12-23 months 1980 56 1981 64 1982 79 1983 81 1984 83 1985 87 1986 78 1987 85 1988 78 1989 92 1990 89 1991 96 1992 96 1993 97 1994 93 1995 98 1996 88 1997 98 1998 88 1999 89 2000 70 2001 99 2002 74 2003 90 2004 91 2005 95 2006 85 2007 99 2008 96 2009 95 2010 97 2011 99 2012 98 2013 99 2014 99 2015 99 2016 95 2017 80 2018 95 2019 92 2020 86 2021 80 2022 81