Year Number of Firms 1992-01-01 297 1997-01-01 358 2002-01-01 389 2003-01-01 359 2004-01-01 359 2005-01-01 344 2006-01-01 322 2007-01-01 365 2008-01-01 401 2009-01-01 326 2010-01-01 370 2011-01-01 355 2012-01-01 347 2013-01-01 330 2014-01-01 363 2015-01-01 326 2016-01-01 355