Year Number of Firms 1992-01-01 356 1997-01-01 402 2002-01-01 445 2003-01-01 539 2004-01-01 550 2005-01-01 552 2006-01-01 554 2007-01-01 571 2008-01-01 675 2009-01-01 564 2010-01-01 517 2011-01-01 440 2012-01-01 376 2013-01-01 329 2014-01-01 354 2015-01-01 321 2016-01-01 338