Year Number of Firms 1992-01-01 198 1997-01-01 280 2002-01-01 319 2003-01-01 314 2004-01-01 323 2005-01-01 321 2006-01-01 338 2007-01-01 364 2008-01-01 393 2009-01-01 359 2010-01-01 365 2011-01-01 395 2012-01-01 370 2013-01-01 369 2014-01-01 383 2015-01-01 400 2016-01-01 392