Year Number of Firms 1992-01-01 111 1997-01-01 193 2002-01-01 192 2003-01-01 217 2004-01-01 230 2005-01-01 225 2006-01-01 250 2007-01-01 246 2008-01-01 270 2009-01-01 243 2010-01-01 268 2011-01-01 284 2012-01-01 281 2013-01-01 279 2014-01-01 259 2015-01-01 240 2016-01-01 235