Year annual % 1990 49.9084300342594 1991 33.3333333333333 1992 34.8989224864435 1993 144.943820224719 1994 438.263725772759 1995 239.731800766284 1996 1.26311040938309 1997 1.49369976851179 1998 17.5274908363879 1999 72.6301861827804 2000 60.7428213798917 2001 39.530228233387 2002 30.2814067263418 2003 21.3179782161229 2004 12.8379278475888 2005 15.5398119400855 2006 12.9489555358887 2007 6.4252012519074 2008 15.5211432201182 2009 6.48362424782576 2010 7.19655419062693 2011 13.8444468459506 2012 10.7352006048331 2013 0.383766168173977 2014 1.58368715816022 2015 4.85459060945995 2016 24.0693638258796 2017 28.1451055406702 2018 5.66059377089626 2019 5.17890859157816 2020 45.2177563492464 2021 60.6914699309171 2022 43.8890753361491 2023 52.3098564977179