Year metric tons per capita 1990 0.2537067430003185 1991 0.5914727631046385 1992 0.5645167407559848 1993 0.4618407013565474 1994 0.3595104375780517 1995 0.354195052289847 1996 0.3502973483358482 1997 0.3487796335188532 1998 0.3521230318781546 1999 0.3257642557748762 2000 0.34516565977059815 2001 0.3328416569457686 2002 0.3225643681900119 2003 0.3183255610778457 2004 0.3047460270311737 2005 0.2903762862897276 2006 0.28683479713889654 2007 0.33593825420370715 2008 0.34049488309711184 2009 0.3640095378325293 2010 0.352871883318855 2011 0.3326100171877443 2012 0.32647759078204186 2013 0.3479338136214138 2014 0.36874228825334643 2015 0.36937082332905136 2016 0.378493591541366 2017 0.37207119481464923 2018 0.388794447700892 2019 0.3706917071649933 2020 0.37478265803135974