Year	Number of Firms
1992-01-01	21
1997-01-01	27
2002-01-01	45
2003-01-01	40
2004-01-01	47
2005-01-01	61
2006-01-01	56
2007-01-01	66
2008-01-01	77
2009-01-01	77
2010-01-01	71
2011-01-01	75
2012-01-01	72
2013-01-01	68
2014-01-01	71
2015-01-01	75
2016-01-01	70