Year Number of Firms 1992-01-01 69 1997-01-01 111 2002-01-01 80 2003-01-01 112 2004-01-01 131 2005-01-01 279 2006-01-01 413 2007-01-01 415 2008-01-01 503 2009-01-01 401 2010-01-01 398 2011-01-01 372 2012-01-01 352 2013-01-01 316 2014-01-01 387 2015-01-01 458 2016-01-01 382