Year	Number of Firms
1992-01-01	19
1997-01-01	21
2002-01-01	30
2003-01-01	23
2004-01-01	23
2005-01-01	37
2006-01-01	42
2007-01-01	47
2008-01-01	58
2009-01-01	67
2010-01-01	58
2011-01-01	60
2012-01-01	54
2013-01-01	70
2014-01-01	69
2015-01-01	68
2016-01-01	64