Year	Number of Firms
1992-01-01	336
1997-01-01	469
2002-01-01	438
2003-01-01	470
2004-01-01	485
2005-01-01	495
2006-01-01	496
2007-01-01	546
2008-01-01	621
2009-01-01	530
2010-01-01	578
2011-01-01	628
2012-01-01	576
2013-01-01	552
2014-01-01	532
2015-01-01	514
2016-01-01	512