Year	Number of Firms
1992-01-01	3
1997-01-01	9
2002-01-01	8
2003-01-01	8
2004-01-01	17
2005-01-01	13
2006-01-01	19
2007-01-01	17
2008-01-01	16
2009-01-01	29
2010-01-01	37
2011-01-01	37
2012-01-01	39
2013-01-01	29
2014-01-01	22
2015-01-01	21
2016-01-01	20