Year	Number of Firms
1992-01-01	22
1997-01-01	19
2002-01-01	23
2003-01-01	23
2004-01-01	21
2005-01-01	25
2006-01-01	21
2007-01-01	29
2008-01-01	30
2009-01-01	27
2010-01-01	27
2011-01-01	29
2012-01-01	23
2013-01-01	27
2014-01-01	29
2015-01-01	22
2016-01-01	20