Year	Number of Firms
1992-01-01	32
1997-01-01	27
2002-01-01	31
2003-01-01	27
2004-01-01	47
2005-01-01	40
2006-01-01	48
2007-01-01	46
2008-01-01	50
2009-01-01	47
2010-01-01	44
2011-01-01	29
2012-01-01	28
2013-01-01	29
2014-01-01	27
2015-01-01	23
2016-01-01	25