Year annual % change 1990 -2.734162902043602 1991 11.633258663939294 1992 -28.86764402523776 1993 33.55969999999999 1994 3.4915472256975777 1995 18.146111718020876 1996 21.32468612431577 1997 28.640423884592604 1998 7.896042954473681 1999 -0.07505468191761899 2000 14.233690729497939 2001 -16.79982211252211 2002 -12.281244519865552 2003 55.824598988369935 2004 30.389764565854293 2005 20.962440724515986 2006 38.20853856976771 2007 19.466220601866226 2008 -50.994190707476896 2009 40.60251954497704 2010 25.063335828780552 2011 -17.3068921017894 2012 29.4043742387854 2013 31.2762913261746 2014 6.48737791875065 2015 22.3698233979787 2016 -14.031817775527 2017 32.8980616059364 2018 -15.7398855393535 2019 25.3336061179273 2020 40.9083481817627 2021 15.7452213776162 2022 -7.95345275746924