Year	Number of Firms
1992-01-01	15
1997-01-01	20
2002-01-01	25
2003-01-01	28
2004-01-01	33
2005-01-01	20
2006-01-01	17
2007-01-01	24
2008-01-01	28
2009-01-01	17
2010-01-01	15
2011-01-01	15
2012-01-01	16
2013-01-01	14
2014-01-01	15
2015-01-01	17
2016-01-01	24