Year Number of Firms 1992-01-01 212 1997-01-01 356 2002-01-01 321 2003-01-01 331 2004-01-01 369 2005-01-01 358 2006-01-01 349 2007-01-01 432 2008-01-01 400 2009-01-01 341 2010-01-01 373 2011-01-01 381 2012-01-01 427 2013-01-01 421 2014-01-01 446 2015-01-01 399 2016-01-01 413