Year Number of Firms 1992-01-01 217 1997-01-01 282 2002-01-01 257 2003-01-01 268 2004-01-01 269 2005-01-01 296 2006-01-01 317 2007-01-01 330 2008-01-01 356 2009-01-01 343 2010-01-01 345 2011-01-01 359 2012-01-01 378 2013-01-01 365 2014-01-01 376 2015-01-01 338 2016-01-01 340