Year	Number of Firms
1992-01-01	20
1997-01-01	22
2002-01-01	24
2003-01-01	30
2004-01-01	35
2005-01-01	30
2006-01-01	32
2007-01-01	58
2008-01-01	53
2009-01-01	48
2010-01-01	50
2011-01-01	42
2012-01-01	50
2013-01-01	40
2014-01-01	39
2015-01-01	39
2016-01-01	37