Year	Number of Firms
1992-01-01	6
1997-01-01	9
2002-01-01	15
2003-01-01	16
2004-01-01	18
2005-01-01	21
2006-01-01	26
2007-01-01	21
2008-01-01	31
2009-01-01	38
2010-01-01	32
2011-01-01	40
2012-01-01	38
2013-01-01	39
2014-01-01	33
2015-01-01	36
2016-01-01	31