Year % of children ages 12-23 months 1980 47 1981 78 1982 60 1983 60 1984 59 1985 73 1986 70 1987 72 1988 75 1989 70 1990 86 1991 82 1992 77 1993 83 1994 83 1995 86 1996 91 1997 95 1998 98 1999 92 2000 98 2001 99 2002 99 2003 98 2004 95 2005 92 2006 88 2007 85 2008 86 2009 85 2010 94 2011 87 2012 85 2013 80 2014 80 2015 73 2016 86 2017 81 2018 88 2019 88 2020 74 2021 87 2022 87