Year	Number of Firms
1992-01-01	12
1997-01-01	14
2002-01-01	13
2003-01-01	15
2004-01-01	14
2005-01-01	13
2006-01-01	12
2007-01-01	17
2008-01-01	13
2009-01-01	14
2010-01-01	15
2011-01-01	17
2012-01-01	16
2013-01-01	18
2014-01-01	13
2015-01-01	17
2016-01-01	17