Year	Number of Firms
1992-01-01	7
1997-01-01	18
2002-01-01	20
2003-01-01	22
2004-01-01	19
2005-01-01	26
2006-01-01	30
2007-01-01	25
2008-01-01	38
2009-01-01	34
2010-01-01	32
2011-01-01	33
2012-01-01	35
2013-01-01	46
2014-01-01	36
2015-01-01	40
2016-01-01	49