Year	Number of Firms
1992-01-01	11
1997-01-01	17
2002-01-01	30
2003-01-01	29
2004-01-01	27
2005-01-01	24
2006-01-01	29
2007-01-01	26
2008-01-01	32
2009-01-01	29
2010-01-01	24
2011-01-01	21
2012-01-01	23
2013-01-01	19
2014-01-01	19
2015-01-01	30
2016-01-01	19