Year	Number of Firms
1992-01-01	143
1997-01-01	321
2002-01-01	355
2003-01-01	342
2004-01-01	393
2005-01-01	375
2006-01-01	413
2007-01-01	493
2008-01-01	544
2009-01-01	500
2010-01-01	587
2011-01-01	533
2012-01-01	515
2013-01-01	547
2014-01-01	533
2015-01-01	514
2016-01-01	499