Year Number 1982 12590 1983 27270 1984 30060 1985 33140 1986 630 1988 439 1989 2197 1990 6993 1991 8501 1992 10257 1993 10629 1994 15649 1995 13513 1996 10888 1997 10228 1998 9782 1999 7677 2000 10208 2001 8754 2002 26313 2003 24929 2004 19854 2005 18325 2006 12249 2007 13089 2008 12966 2009 16250 2010 15864 2011 15004 2012 15100 2013 3809 2014 4262 2015 4353 2016 4719 2017 5301 2018 5620 2019 5647 2020 5495 2021 6061 2022 6794 2023 7392