Year	Number of Firms
1992-01-01	9
1997-01-01	19
2002-01-01	31
2003-01-01	28
2004-01-01	35
2005-01-01	29
2006-01-01	28
2007-01-01	31
2008-01-01	34
2009-01-01	27
2010-01-01	35
2011-01-01	25
2012-01-01	27
2013-01-01	38
2014-01-01	44
2015-01-01	42
2016-01-01	43