Year	Number of Firms
1992-01-01	7
1997-01-01	7
2002-01-01	19
2003-01-01	16
2004-01-01	16
2005-01-01	24
2006-01-01	16
2007-01-01	18
2008-01-01	25
2009-01-01	21
2010-01-01	30
2011-01-01	29
2012-01-01	29
2013-01-01	25
2014-01-01	20
2015-01-01	20
2016-01-01	29