Year Number of Firms 1992-01-01 201 1997-01-01 244 2002-01-01 262 2003-01-01 292 2004-01-01 309 2005-01-01 316 2006-01-01 367 2007-01-01 395 2008-01-01 365 2009-01-01 357 2010-01-01 373 2011-01-01 358 2012-01-01 363 2013-01-01 344 2014-01-01 338 2015-01-01 349 2016-01-01 311