Year	Number of Firms
1992-01-01	3
1997-01-01	10
2002-01-01	13
2003-01-01	12
2004-01-01	16
2005-01-01	12
2006-01-01	11
2007-01-01	19
2008-01-01	20
2009-01-01	21
2010-01-01	21
2011-01-01	17
2012-01-01	13
2013-01-01	22
2014-01-01	23
2015-01-01	14
2016-01-01	22