Year	Number of Firms
1992-01-01	18
1997-01-01	26
2002-01-01	21
2003-01-01	25
2004-01-01	27
2005-01-01	29
2006-01-01	29
2007-01-01	25
2008-01-01	33
2009-01-01	32
2010-01-01	30
2011-01-01	31
2012-01-01	29
2013-01-01	25
2014-01-01	27
2015-01-01	27
2016-01-01	26