Year	Number of Firms
1992-01-01	28
1997-01-01	26
2002-01-01	21
2003-01-01	22
2004-01-01	30
2005-01-01	28
2006-01-01	26
2007-01-01	28
2008-01-01	36
2009-01-01	27
2010-01-01	25
2011-01-01	40
2012-01-01	36
2013-01-01	28
2014-01-01	38
2015-01-01	35
2016-01-01	30