Year	Number of Firms
1992-01-01	25
1997-01-01	27
2002-01-01	47
2003-01-01	39
2004-01-01	50
2005-01-01	50
2006-01-01	46
2007-01-01	48
2008-01-01	39
2009-01-01	39
2010-01-01	37
2011-01-01	34
2012-01-01	41
2013-01-01	36
2014-01-01	38
2015-01-01	36
2016-01-01	38