Year	Number of Firms
1992-01-01	577
1997-01-01	606
2002-01-01	574
2003-01-01	524
2004-01-01	581
2005-01-01	589
2006-01-01	567
2007-01-01	622
2008-01-01	622
2009-01-01	598
2010-01-01	597
2011-01-01	637
2012-01-01	570
2013-01-01	595
2014-01-01	562
2015-01-01	542
2016-01-01	538