Year	Number of Firms
1992-01-01	15
1997-01-01	25
2002-01-01	21
2003-01-01	19
2004-01-01	38
2005-01-01	34
2006-01-01	39
2007-01-01	39
2008-01-01	32
2009-01-01	28
2010-01-01	24
2011-01-01	31
2012-01-01	28
2013-01-01	30
2014-01-01	25
2015-01-01	30
2016-01-01	32