Year	Number of Firms
1992-01-01	2
1997-01-01	2
2002-01-01	7
2003-01-01	9
2004-01-01	9
2005-01-01	12
2006-01-01	12
2007-01-01	10
2008-01-01	19
2009-01-01	25
2010-01-01	30
2011-01-01	29
2012-01-01	34
2013-01-01	25
2014-01-01	37
2015-01-01	30
2016-01-01	23