Year	Number of Firms
1992-01-01	9
1997-01-01	14
2002-01-01	12
2003-01-01	15
2004-01-01	12
2005-01-01	16
2006-01-01	26
2007-01-01	28
2008-01-01	31
2009-01-01	38
2010-01-01	44
2011-01-01	44
2012-01-01	37
2013-01-01	36
2014-01-01	36
2015-01-01	29
2016-01-01	36