Year	Number of Firms
1992-01-01	7
1997-01-01	47
2002-01-01	56
2003-01-01	53
2004-01-01	45
2005-01-01	49
2006-01-01	48
2007-01-01	57
2008-01-01	58
2009-01-01	69
2010-01-01	73
2011-01-01	62
2012-01-01	70
2013-01-01	65
2014-01-01	67
2015-01-01	58
2016-01-01	66