Year metric tons 2000 152830 2001 144299 2002 169038 2003 164133.42 2004 178984 2005 160569 2006 161461 2007 148351 2008 190722 2009 188562 2010 166184 2011 149591 2012 153433 2013 173287 2014 168563 2015 176516 2016 139262 2017 149291 2018 157630 2019 163590 2020 146230 2021 147160 2022 170660