Year Number of Firms 1992-01-01 242 1997-01-01 255 2002-01-01 289 2003-01-01 301 2004-01-01 321 2005-01-01 292 2006-01-01 331 2007-01-01 346 2008-01-01 369 2009-01-01 318 2010-01-01 307 2011-01-01 316 2012-01-01 302 2013-01-01 308 2014-01-01 313 2015-01-01 330 2016-01-01 338