Year	Number of Firms
1992-01-01	19
1997-01-01	17
2002-01-01	17
2003-01-01	22
2004-01-01	26
2005-01-01	22
2006-01-01	23
2007-01-01	23
2008-01-01	37
2009-01-01	34
2010-01-01	33
2011-01-01	33
2012-01-01	32
2013-01-01	26
2014-01-01	30
2015-01-01	35
2016-01-01	27