Year	Number of Firms
1992-01-01	186
1997-01-01	302
2002-01-01	310
2003-01-01	304
2004-01-01	345
2005-01-01	360
2006-01-01	357
2007-01-01	393
2008-01-01	411
2009-01-01	377
2010-01-01	421
2011-01-01	457
2012-01-01	493
2013-01-01	455
2014-01-01	490
2015-01-01	450
2016-01-01	395