Year	Number of Firms
1992-01-01	4
1997-01-01	2
2002-01-01	10
2003-01-01	13
2004-01-01	12
2005-01-01	17
2006-01-01	18
2007-01-01	29
2008-01-01	31
2009-01-01	39
2010-01-01	49
2011-01-01	46
2012-01-01	35
2013-01-01	28
2014-01-01	25
2015-01-01	25
2016-01-01	25