Year	Number of Firms
1992-01-01	13
1997-01-01	18
2002-01-01	24
2003-01-01	21
2004-01-01	24
2005-01-01	27
2006-01-01	33
2007-01-01	37
2008-01-01	41
2009-01-01	35
2010-01-01	30
2011-01-01	32
2012-01-01	34
2013-01-01	44
2014-01-01	46
2015-01-01	45
2016-01-01	50