Year annual % 1992 23.277929103046112 1993 22.7872672317549 1994 -3.4487783860502836 1995 11.258949606578247 1996 3.5685320356853207 1997 18.20203602192639 1998 6.636750052999788 2001 12.850607960420401 2002 19.68192295982719 2003 33.16729858394002 2004 36.462555579004054 2005 33.35241990638469 2006 94.37862597702907 2007 -12.289014068659823 2008 38.420930882274426 2009 18.63787653317138 2010 85.25901055148958 2011 18.237178934372405 2012 -9.295135968356833 2013 13.415997259984582 2014 14.154756450223646 2015 13.605046654271739 2016 12.872175220050169 2017 16.909414454011785 2018 9.829416890350357 2019 23.405675251672896 2020 22.798631316726585 2021 8.666525840597362