Year	Number of Firms
1992-01-01	15
1997-01-01	20
2002-01-01	22
2003-01-01	24
2004-01-01	29
2005-01-01	31
2006-01-01	30
2007-01-01	41
2008-01-01	34
2009-01-01	33
2010-01-01	42
2011-01-01	42
2012-01-01	35
2013-01-01	33
2014-01-01	40
2015-01-01	39
2016-01-01	41