Year	Number of Firms
1992-01-01	4
1997-01-01	8
2002-01-01	6
2003-01-01	9
2004-01-01	10
2005-01-01	12
2006-01-01	17
2007-01-01	17
2008-01-01	15
2009-01-01	20
2010-01-01	23
2011-01-01	29
2012-01-01	29
2013-01-01	32
2014-01-01	31
2015-01-01	35
2016-01-01	29