Year	Number of Firms
1992-01-01	12
1997-01-01	17
2002-01-01	4
2003-01-01	10
2004-01-01	13
2005-01-01	17
2006-01-01	17
2007-01-01	19
2008-01-01	16
2009-01-01	29
2010-01-01	21
2011-01-01	22
2012-01-01	19
2013-01-01	21
2014-01-01	32
2015-01-01	22
2016-01-01	23