Year	Number of Firms
1992-01-01	56
1997-01-01	57
2002-01-01	43
2003-01-01	47
2004-01-01	51
2005-01-01	57
2006-01-01	54
2007-01-01	56
2008-01-01	54
2009-01-01	45
2010-01-01	42
2011-01-01	47
2012-01-01	52
2013-01-01	48
2014-01-01	44
2015-01-01	43
2016-01-01	44