Year	Number of Firms
1992-01-01	9
1997-01-01	15
2002-01-01	15
2003-01-01	19
2004-01-01	19
2005-01-01	22
2006-01-01	27
2007-01-01	35
2008-01-01	34
2009-01-01	40
2010-01-01	36
2011-01-01	40
2012-01-01	42
2013-01-01	43
2014-01-01	44
2015-01-01	43
2016-01-01	41