Year Number of Firms 1992-01-01 228 1997-01-01 335 2002-01-01 295 2003-01-01 304 2004-01-01 331 2005-01-01 341 2006-01-01 336 2007-01-01 351 2008-01-01 365 2009-01-01 383 2010-01-01 402 2011-01-01 405 2012-01-01 440 2013-01-01 413 2014-01-01 399 2015-01-01 395 2016-01-01 366