Year	Number of Firms
1992-01-01	8
1997-01-01	19
2002-01-01	21
2003-01-01	19
2004-01-01	21
2005-01-01	32
2006-01-01	43
2007-01-01	40
2008-01-01	37
2009-01-01	48
2010-01-01	40
2011-01-01	31
2012-01-01	42
2013-01-01	32
2014-01-01	44
2015-01-01	48
2016-01-01	46