Year	Number of Firms
1992-01-01	2
1997-01-01	7
2002-01-01	15
2003-01-01	10
2004-01-01	11
2005-01-01	11
2006-01-01	16
2007-01-01	17
2008-01-01	19
2009-01-01	24
2010-01-01	21
2011-01-01	15
2012-01-01	16
2013-01-01	20
2014-01-01	20
2015-01-01	16
2016-01-01	22