Year	Number of Firms
1992-01-01	11
1997-01-01	21
2002-01-01	30
2003-01-01	31
2004-01-01	35
2005-01-01	30
2006-01-01	23
2007-01-01	25
2008-01-01	40
2009-01-01	30
2010-01-01	32
2011-01-01	40
2012-01-01	39
2013-01-01	42
2014-01-01	40
2015-01-01	39
2016-01-01	46