Year	Number of Firms
1992-01-01	7
1997-01-01	9
2002-01-01	19
2003-01-01	16
2004-01-01	22
2005-01-01	20
2006-01-01	20
2007-01-01	25
2008-01-01	27
2009-01-01	22
2010-01-01	35
2011-01-01	37
2012-01-01	35
2013-01-01	36
2014-01-01	36
2015-01-01	37
2016-01-01	30