Year	Number of Firms
1992-01-01	9
1997-01-01	15
2002-01-01	12
2003-01-01	30
2004-01-01	28
2005-01-01	28
2006-01-01	32
2007-01-01	28
2008-01-01	37
2009-01-01	36
2010-01-01	28
2011-01-01	39
2012-01-01	32
2013-01-01	26
2014-01-01	26
2015-01-01	24
2016-01-01	31