Year	Number of Firms
1992-01-01	74
1997-01-01	158
2002-01-01	546
2003-01-01	191
2004-01-01	533
2005-01-01	441
2006-01-01	643
2007-01-01	412
2008-01-01	275
2009-01-01	258
2010-01-01	318
2011-01-01	282
2012-01-01	321
2013-01-01	329
2014-01-01	347
2015-01-01	333
2016-01-01	345