Year	Number of Firms
1992-01-01	3
1997-01-01	23
2002-01-01	26
2003-01-01	30
2004-01-01	41
2005-01-01	40
2006-01-01	35
2007-01-01	50
2008-01-01	46
2009-01-01	31
2010-01-01	38
2011-01-01	46
2012-01-01	41
2013-01-01	45
2014-01-01	44
2015-01-01	38
2016-01-01	31