Year	Number of Firms
1992-01-01	429
1997-01-01	523
2002-01-01	507
2003-01-01	505
2004-01-01	515
2005-01-01	507
2006-01-01	508
2007-01-01	539
2008-01-01	536
2009-01-01	518
2010-01-01	549
2011-01-01	538
2012-01-01	549
2013-01-01	554
2014-01-01	523
2015-01-01	503
2016-01-01	499