Year	Number of Firms
1992-01-01	9
1997-01-01	9
2002-01-01	17
2003-01-01	17
2004-01-01	18
2005-01-01	16
2006-01-01	17
2007-01-01	22
2008-01-01	26
2009-01-01	34
2010-01-01	27
2011-01-01	31
2012-01-01	30
2013-01-01	34
2014-01-01	32
2015-01-01	27
2016-01-01	31