Year	Number of Firms
1992-01-01	17
1997-01-01	25
2002-01-01	25
2003-01-01	25
2004-01-01	44
2005-01-01	44
2006-01-01	35
2007-01-01	37
2008-01-01	52
2009-01-01	60
2010-01-01	96
2011-01-01	97
2012-01-01	90
2013-01-01	75
2014-01-01	71
2015-01-01	74
2016-01-01	70