Year	Number of Firms
1992-01-01	7
1997-01-01	32
2002-01-01	24
2003-01-01	25
2004-01-01	24
2005-01-01	19
2006-01-01	27
2007-01-01	25
2008-01-01	23
2009-01-01	23
2010-01-01	31
2011-01-01	24
2012-01-01	29
2013-01-01	30
2014-01-01	25
2015-01-01	25
2016-01-01	20