Year	Number of Firms
1992-01-01	520
1997-01-01	597
2002-01-01	551
2003-01-01	545
2004-01-01	579
2005-01-01	599
2006-01-01	589
2007-01-01	644
2008-01-01	662
2009-01-01	614
2010-01-01	621
2011-01-01	670
2012-01-01	662
2013-01-01	611
2014-01-01	605
2015-01-01	584
2016-01-01	611