Year	Number of Firms
1992-01-01	8
1997-01-01	12
2002-01-01	19
2003-01-01	27
2004-01-01	33
2005-01-01	29
2006-01-01	24
2007-01-01	36
2008-01-01	39
2009-01-01	36
2010-01-01	51
2011-01-01	39
2012-01-01	28
2013-01-01	27
2014-01-01	37
2015-01-01	20
2016-01-01	17