Year	Number of Firms
1992-01-01	21
1997-01-01	32
2002-01-01	40
2003-01-01	46
2004-01-01	46
2005-01-01	44
2006-01-01	42
2007-01-01	46
2008-01-01	56
2009-01-01	45
2010-01-01	49
2011-01-01	41
2012-01-01	30
2013-01-01	29
2014-01-01	34
2015-01-01	35
2016-01-01	36