Year	Number of Firms
1992-01-01	4
1997-01-01	9
2002-01-01	8
2003-01-01	5
2004-01-01	12
2005-01-01	18
2006-01-01	9
2007-01-01	7
2008-01-01	12
2009-01-01	21
2010-01-01	24
2011-01-01	28
2012-01-01	20
2013-01-01	22
2014-01-01	26
2015-01-01	22
2016-01-01	21