Year	Number of Firms
1992-01-01	1
1997-01-01	6
2002-01-01	9
2003-01-01	10
2004-01-01	12
2005-01-01	13
2006-01-01	18
2007-01-01	19
2008-01-01	21
2009-01-01	20
2010-01-01	18
2011-01-01	19
2012-01-01	18
2013-01-01	23
2014-01-01	22
2015-01-01	20
2016-01-01	19