Year	Number of Firms
1992-01-01	13
1997-01-01	27
2002-01-01	31
2003-01-01	31
2004-01-01	24
2005-01-01	30
2006-01-01	24
2007-01-01	34
2008-01-01	36
2009-01-01	38
2010-01-01	30
2011-01-01	34
2012-01-01	33
2013-01-01	41
2014-01-01	42
2015-01-01	41
2016-01-01	44