Year	Number of Firms
1992-01-01	4
1997-01-01	1
2002-01-01	10
2003-01-01	10
2004-01-01	13
2005-01-01	15
2006-01-01	11
2007-01-01	14
2008-01-01	20
2009-01-01	15
2010-01-01	12
2011-01-01	11
2012-01-01	13
2013-01-01	15
2014-01-01	17
2015-01-01	20
2016-01-01	15