Year Number of 1990 827.99 1991 857.56 1992 889.07 1993 923.69 1994 960.64 1995 1000.91 1996 1053.56 1997 1109.73 1998 1172.03 1999 1237.63 2000 1307.26 2001 1366.41 2002 1428.4 2003 1493.95 2004 1561.37 2005 1631.43 2006 1682.22 2007 1732 2008 1784.45 2009 1839.03 2010 1897.99 2011 1955.6 2012 2017.61 2013 2083.3 2014 2153.47 2015 2228.55 2016 2311.12