Year Number of Firms 1992-01-01 85 1997-01-01 157 2002-01-01 177 2003-01-01 172 2004-01-01 174 2005-01-01 181 2006-01-01 175 2007-01-01 209 2008-01-01 253 2009-01-01 314 2010-01-01 313 2011-01-01 332 2012-01-01 364 2013-01-01 388 2014-01-01 365 2015-01-01 339 2016-01-01 316