Year Number of 1990 1998.24 1991 1955.09 1992 2033.49 1993 2048.73 1994 2076.8 1995 2171.37 1996 2145.83 1997 2150.38 1998 2155.17 1999 2127.16 2000 2217.15 2001 2060.53 2002 2006.65 2003 1958.73 2004 1945.32 2005 1996.91 2006 2023.12 2007 2070.02 2008 2159.79 2009 2259.52 2010 2416.93 2011 2485.64 2012 2624.62 2013 2807.2 2014 3005.85 2015 3103.85 2016 3168.43