Year	Number of Firms
1992-01-01	13
1997-01-01	15
2002-01-01	19
2003-01-01	18
2004-01-01	18
2005-01-01	14
2006-01-01	20
2007-01-01	21
2008-01-01	18
2009-01-01	28
2010-01-01	32
2011-01-01	30
2012-01-01	25
2013-01-01	27
2014-01-01	21
2015-01-01	21
2016-01-01	22