Year	Number of Firms
1992-01-01	30
1997-01-01	28
2002-01-01	33
2003-01-01	49
2004-01-01	46
2005-01-01	34
2006-01-01	35
2007-01-01	41
2008-01-01	38
2009-01-01	36
2010-01-01	45
2011-01-01	33
2012-01-01	34
2013-01-01	36
2014-01-01	31
2015-01-01	36
2016-01-01	40