Year	Number of Firms
1992-01-01	12
1997-01-01	15
2002-01-01	12
2003-01-01	12
2004-01-01	14
2005-01-01	10
2006-01-01	19
2007-01-01	16
2008-01-01	19
2009-01-01	19
2010-01-01	15
2011-01-01	14
2012-01-01	16
2013-01-01	21
2014-01-01	10
2015-01-01	17
2016-01-01	17