Year	Number of Firms
1992-01-01	2
1997-01-01	4
2002-01-01	8
2003-01-01	7
2004-01-01	11
2005-01-01	11
2006-01-01	22
2007-01-01	12
2008-01-01	26
2009-01-01	28
2010-01-01	26
2011-01-01	26
2012-01-01	38
2013-01-01	35
2014-01-01	33
2015-01-01	32
2016-01-01	32