Year	Number of Firms
1992-01-01	1
1997-01-01	6
2002-01-01	18
2003-01-01	11
2004-01-01	20
2005-01-01	21
2006-01-01	15
2007-01-01	20
2008-01-01	23
2009-01-01	16
2010-01-01	18
2011-01-01	18
2012-01-01	15
2013-01-01	17
2014-01-01	14
2015-01-01	17
2016-01-01	15