Year	Number of Firms
1992-01-01	307
1997-01-01	451
2002-01-01	450
2003-01-01	452
2004-01-01	464
2005-01-01	528
2006-01-01	516
2007-01-01	597
2008-01-01	592
2009-01-01	573
2010-01-01	611
2011-01-01	678
2012-01-01	682
2013-01-01	670
2014-01-01	648
2015-01-01	636
2016-01-01	615