Year Number of 1990 887.85 1991 911.65 1992 936.62 1993 946.22 1994 955.22 1995 977.38 1996 1009.13 1997 1055.22 1998 1091.26 1999 1139.35 2000 1211.35 2001 1254.03 2002 1320.3 2003 1380.12 2004 1446.25 2005 1514.26 2006 1573.78 2007 1635.37 2008 1695.31 2009 1751.81 2010 1803.6 2011 1847.83 2012 1895.79 2013 1943.92 2014 1992.09 2015 2037.37 2016 2085.48