Year	Number of Firms
1992-01-01	3
1997-01-01	16
2002-01-01	17
2003-01-01	21
2004-01-01	17
2005-01-01	23
2006-01-01	19
2007-01-01	33
2008-01-01	35
2009-01-01	25
2010-01-01	33
2011-01-01	38
2012-01-01	28
2013-01-01	32
2014-01-01	30
2015-01-01	27
2016-01-01	32