Year	Number of Firms
1992-01-01	9
1997-01-01	17
2002-01-01	28
2003-01-01	25
2004-01-01	24
2005-01-01	23
2006-01-01	27
2007-01-01	30
2008-01-01	36
2009-01-01	40
2010-01-01	41
2011-01-01	47
2012-01-01	40
2013-01-01	40
2014-01-01	51
2015-01-01	43
2016-01-01	43