Year	Number of Firms
1992-01-01	9
1997-01-01	29
2002-01-01	39
2003-01-01	34
2004-01-01	39
2005-01-01	45
2006-01-01	48
2007-01-01	67
2008-01-01	49
2009-01-01	53
2010-01-01	42
2011-01-01	39
2012-01-01	38
2013-01-01	48
2014-01-01	55
2015-01-01	55
2016-01-01	59