Year	Number of Firms
1992-01-01	18
1997-01-01	41
2002-01-01	45
2003-01-01	37
2004-01-01	32
2005-01-01	51
2006-01-01	47
2007-01-01	57
2008-01-01	52
2009-01-01	70
2010-01-01	74
2011-01-01	70
2012-01-01	62
2013-01-01	67
2014-01-01	69
2015-01-01	67
2016-01-01	63