Year Number of Firms 1992-01-01 120 1997-01-01 148 2002-01-01 216 2003-01-01 222 2004-01-01 223 2005-01-01 237 2006-01-01 244 2007-01-01 263 2008-01-01 285 2009-01-01 272 2010-01-01 278 2011-01-01 283 2012-01-01 293 2013-01-01 302 2014-01-01 278 2015-01-01 286 2016-01-01 319