Year	Number of Firms
1992-01-01	37
1997-01-01	37
2002-01-01	40
2003-01-01	40
2004-01-01	47
2005-01-01	53
2006-01-01	51
2007-01-01	59
2008-01-01	54
2009-01-01	58
2010-01-01	56
2011-01-01	53
2012-01-01	51
2013-01-01	45
2014-01-01	54
2015-01-01	48
2016-01-01	47