Year % of children ages 12-23 months 1980 96 1981 96 1982 97 1983 97 1984 97 1985 97 1986 97 1987 97 1988 97 1989 97 1990 97 1991 97 1992 98 1993 97 1994 97 1995 97 1996 97 1997 97 1998 97 1999 97 2000 97 2001 97 2002 97 2003 98 2004 98 2005 96 2006 96 2007 97 2008 97 2009 97 2010 97 2011 97 2012 97 2013 97 2014 96 2015 95 2016 95 2017 94 2018 93 2019 94 2020 94 2021 95 2022 93