Year	Number of Firms
1992-01-01	169
1997-01-01	220
2002-01-01	210
2003-01-01	226
2004-01-01	245
2005-01-01	228
2006-01-01	235
2007-01-01	244
2008-01-01	259
2009-01-01	219
2010-01-01	235
2011-01-01	257
2012-01-01	235
2013-01-01	227
2014-01-01	230
2015-01-01	210
2016-01-01	223