Year	Number of Firms
1992-01-01	421
1997-01-01	510
2002-01-01	541
2003-01-01	545
2004-01-01	551
2005-01-01	566
2006-01-01	545
2007-01-01	600
2008-01-01	619
2009-01-01	624
2010-01-01	591
2011-01-01	598
2012-01-01	595
2013-01-01	571
2014-01-01	577
2015-01-01	546
2016-01-01	561