Year	Number of Firms
1992-01-01	3
1997-01-01	12
2002-01-01	19
2003-01-01	19
2004-01-01	27
2005-01-01	33
2006-01-01	24
2007-01-01	28
2008-01-01	31
2009-01-01	35
2010-01-01	25
2011-01-01	27
2012-01-01	20
2013-01-01	23
2014-01-01	24
2015-01-01	27
2016-01-01	22