Year	Number of Firms
1992-01-01	18
1997-01-01	11
2002-01-01	11
2003-01-01	16
2004-01-01	13
2005-01-01	16
2006-01-01	19
2007-01-01	15
2008-01-01	13
2009-01-01	13
2010-01-01	20
2011-01-01	18
2012-01-01	22
2013-01-01	21
2014-01-01	20
2015-01-01	20
2016-01-01	20