Tonga Tonga, PM2.5 air pollution, mean annual exposure (micrograms per cubic meter)

Year Value Rank Change Change,%
2020 12.5 148 -0.279 -2.19%
2019 12.8 149 +0.111 +0.874%
2018 12.6 152 +0.566 +4.69%
2017 12.1 155 +0.0634 +0.527%
2016 12 158 +0.277 +2.36%
2015 11.7 161 -0.352 -2.91%
2014 12.1 159 -0.0888 -0.729%
2013 12.2 164 -0.196 -1.59%
2012 12.4 162 +0.246 +2.03%
2011 12.1 169 -0.202 -1.64%
2010 12.3 168 -0.0518 -0.418%
2009 12.4 167 -0.0363 -0.293%
2008 12.4 167 -0.0293 -0.235%
2007 12.4 167 -0.0306 -0.245%
2006 12.5 170 -0.0403 -0.322%
2005 12.5 170 -0.0761 -0.604%
2004 12.6 169 -0.111 -0.873%
2003 12.7 170 -0.114 -0.886%
2002 12.8 169 -0.084 -0.651%
2001 12.9 170 -0.0222 -0.172%
2000 12.9 171 +0.0753 +0.586%
1999 12.9 171 +0.152 +1.2%
1998 12.7 172 +0.176 +1.41%
1997 12.5 172 +0.148 +1.19%
1996 12.4 170 +0.067 +0.544%
1995 12.3 170 -0.00944 -0.0767%
1994 12.3 170 -0.0451 -0.365%
1993 12.4 170 -0.0788 -0.633%
1992 12.4 171 -0.11 -0.88%
1991 12.6 171 -0.14 -1.1%
1990 12.7 171

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