Year	Number of Firms
1992-01-01	4
1997-01-01	4
2002-01-01	2
2003-01-01	3
2004-01-01	8
2005-01-01	13
2006-01-01	12
2007-01-01	11
2008-01-01	16
2009-01-01	17
2010-01-01	22
2011-01-01	28
2012-01-01	24
2013-01-01	21
2014-01-01	31
2015-01-01	21
2016-01-01	18