Year	Number of Firms
1992-01-01	7
1997-01-01	24
2002-01-01	17
2003-01-01	24
2004-01-01	32
2005-01-01	26
2006-01-01	24
2007-01-01	27
2008-01-01	26
2009-01-01	33
2010-01-01	34
2011-01-01	33
2012-01-01	32
2013-01-01	32
2014-01-01	23
2015-01-01	24
2016-01-01	26