Year	Number of Firms
1992-01-01	18
1997-01-01	13
2002-01-01	14
2003-01-01	16
2004-01-01	17
2005-01-01	15
2006-01-01	23
2007-01-01	24
2008-01-01	29
2009-01-01	24
2010-01-01	27
2011-01-01	24
2012-01-01	11
2013-01-01	11
2014-01-01	8
2015-01-01	10
2016-01-01	15