Year	Number of Firms
1992-01-01	5
1997-01-01	8
2002-01-01	13
2003-01-01	13
2004-01-01	19
2005-01-01	28
2006-01-01	22
2007-01-01	24
2008-01-01	23
2009-01-01	12
2010-01-01	20
2011-01-01	20
2012-01-01	23
2013-01-01	12
2014-01-01	19
2015-01-01	19
2016-01-01	21