Year	Number of Firms
1992-01-01	2
1997-01-01	3
2002-01-01	11
2003-01-01	13
2004-01-01	17
2005-01-01	6
2006-01-01	12
2007-01-01	16
2008-01-01	27
2009-01-01	33
2010-01-01	40
2011-01-01	31
2012-01-01	22
2013-01-01	24
2014-01-01	21
2015-01-01	11
2016-01-01	17