Year	Number of Firms
1992-01-01	21
1997-01-01	22
2002-01-01	24
2003-01-01	33
2004-01-01	40
2005-01-01	31
2006-01-01	37
2007-01-01	37
2008-01-01	44
2009-01-01	41
2010-01-01	27
2011-01-01	37
2012-01-01	25
2013-01-01	26
2014-01-01	23
2015-01-01	16
2016-01-01	17