Record Number Recognize Secondhand Smoke Dangers

	Very harmful
1994	36
1996	48
1997	55
1999	43
2001	52
2002	56
2003	51
2004	55
2005	53
2006	56
2007	56
2008	56
2010	55
2011	54
2012	56
2013	59

% saying secondhand smoke is...

Sources: gallup.com