Year	Number of Firms
1992-01-01	14
1997-01-01	11
2002-01-01	24
2003-01-01	24
2004-01-01	24
2005-01-01	18
2006-01-01	25
2007-01-01	18
2008-01-01	17
2009-01-01	23
2010-01-01	22
2011-01-01	16
2012-01-01	11
2013-01-01	5
2014-01-01	6
2015-01-01	7
2016-01-01	6