Year annual % 1991 93.92132138049365 1992 1030.7768106265007 1993 1078.8828546508475 1994 952.307149668942 1995 161.16391757915898 1996 40.964950823734824 1997 17.90489497544322 1998 9.461730171716127 1999 23.005304387068406 2000 27.161738047337394 2001 10.200915874305025 2002 5.803224096766186 2003 8.32077420436579 2004 8.433694478327496 2005 7.9351029706329115 2006 10.748615735072349 2007 12.872702229720346 2008 12.04615359392804 2009 3.266278470244252 2010 8.901309511321685 2011 9.04040451049498 2012 5.772571687042564 2013 3.499917046394806 2014 3.587643710249502 2015 2.111496889204872 2016 3.50806334370899 2017 6.2898061770284315 2018 3.3367757602766446 2019 3.8271821478517722 2020 2.127504417407586 2021 8.472511606393468 2022 12.082081128640986 2023 6.449366252162513