Year	Number of Firms
1992-01-01	19
1997-01-01	17
2002-01-01	19
2003-01-01	21
2004-01-01	22
2005-01-01	13
2006-01-01	11
2007-01-01	20
2008-01-01	15
2009-01-01	17
2010-01-01	15
2011-01-01	20
2012-01-01	15
2013-01-01	13
2014-01-01	12
2015-01-01	11
2016-01-01	18