Year	Number of Firms
1992-01-01	309
1997-01-01	453
2002-01-01	470
2003-01-01	537
2004-01-01	560
2005-01-01	560
2006-01-01	573
2007-01-01	643
2008-01-01	729
2009-01-01	657
2010-01-01	709
2011-01-01	698
2012-01-01	688
2013-01-01	673
2014-01-01	702
2015-01-01	663
2016-01-01	688