Year	Number of Firms
1992-01-01	8
1997-01-01	27
2002-01-01	22
2003-01-01	22
2004-01-01	26
2005-01-01	27
2006-01-01	32
2007-01-01	48
2008-01-01	50
2009-01-01	47
2010-01-01	53
2011-01-01	48
2012-01-01	48
2013-01-01	48
2014-01-01	68
2015-01-01	61
2016-01-01	66