Year	Number of Firms
1992-01-01	10
1997-01-01	23
2002-01-01	23
2003-01-01	23
2004-01-01	23
2005-01-01	27
2006-01-01	26
2007-01-01	32
2008-01-01	37
2009-01-01	36
2010-01-01	36
2011-01-01	39
2012-01-01	29
2013-01-01	29
2014-01-01	22
2015-01-01	22
2016-01-01	23