Year Number of Firms 1992-01-01 279 1997-01-01 339 2002-01-01 307 2003-01-01 328 2004-01-01 313 2005-01-01 320 2006-01-01 324 2007-01-01 369 2008-01-01 381 2009-01-01 343 2010-01-01 342 2011-01-01 361 2012-01-01 352 2013-01-01 324 2014-01-01 301 2015-01-01 297 2016-01-01 295