Year	Number of Firms
1992-01-01	295
1997-01-01	429
2002-01-01	468
2003-01-01	463
2004-01-01	503
2005-01-01	473
2006-01-01	503
2007-01-01	551
2008-01-01	609
2009-01-01	555
2010-01-01	590
2011-01-01	624
2012-01-01	584
2013-01-01	621
2014-01-01	639
2015-01-01	645
2016-01-01	621