Year	Number of Firms
1992-01-01	10
1997-01-01	9
2002-01-01	17
2003-01-01	18
2004-01-01	21
2005-01-01	28
2006-01-01	26
2007-01-01	30
2008-01-01	28
2009-01-01	22
2010-01-01	18
2011-01-01	17
2012-01-01	10
2013-01-01	16
2014-01-01	13
2015-01-01	12
2016-01-01	6