Year Number of Firms 1992-01-01 723 1997-01-01 1451 2002-01-01 1973 2003-01-01 2178 2004-01-01 2591 2005-01-01 2716 2006-01-01 2881 2007-01-01 3200 2008-01-01 3447 2009-01-01 3333 2010-01-01 3663 2011-01-01 3865 2012-01-01 3737 2013-01-01 3637 2014-01-01 3568 2015-01-01 3603 2016-01-01 3629