Year	Number of Firms
1992-01-01	3
1997-01-01	7
2002-01-01	28
2003-01-01	16
2004-01-01	32
2005-01-01	25
2006-01-01	31
2007-01-01	26
2008-01-01	32
2009-01-01	37
2010-01-01	25
2011-01-01	35
2012-01-01	30
2013-01-01	27
2014-01-01	27
2015-01-01	26
2016-01-01	30