Year Number of Firms 1992-01-01 883 1997-01-01 1136 2002-01-01 1125 2003-01-01 1173 2004-01-01 1289 2005-01-01 1336 2006-01-01 1380 2007-01-01 1475 2008-01-01 1527 2009-01-01 1454 2010-01-01 1572 2011-01-01 1652 2012-01-01 1666 2013-01-01 1580 2014-01-01 1624 2015-01-01 1492 2016-01-01 1531