Year Number of Firms 1992-01-01 212 1997-01-01 219 2002-01-01 274 2003-01-01 286 2004-01-01 313 2005-01-01 298 2006-01-01 296 2007-01-01 337 2008-01-01 338 2009-01-01 343 2010-01-01 324 2011-01-01 347 2012-01-01 324 2013-01-01 310 2014-01-01 344 2015-01-01 322 2016-01-01 319