Year annual % 1990 15.9029112575078 1991 128.629771683447 1992 1490.4184248448 1993 887.840736234023 1994 307.298056897061 1995 144.006867163195 1996 46.0363776683441 1997 15.0585036426846 1998 18.5389673419024 1999 72.3866054661464 2000 37.6979282123097 2001 16.4796193570037 2002 15.6619063054593 2003 13.6571368113275 2004 20.2551495775111 2005 19.279432134411 2006 15.1204066316764 2007 13.8412392398238 2008 18.0135183350842 2009 1.97061260305912 2010 14.1911095688207 2011 24.4600860621898 2012 8.90786842087834 2013 5.32013887237915 2014 7.49007111696609 2015 7.24973590678889 2016 2.84422269802643 2017 5.34981508767618 2018 9.99797671148308 2019 3.26313281881684 2020 0.898246027195242 2021 19.4115890615904 2022 16.7152740606271 2023 7.07360156603734