Year	Number of Firms
1992-01-01	21
1997-01-01	29
2002-01-01	37
2003-01-01	30
2004-01-01	35
2005-01-01	31
2006-01-01	38
2007-01-01	38
2008-01-01	44
2009-01-01	41
2010-01-01	41
2011-01-01	51
2012-01-01	56
2013-01-01	47
2014-01-01	42
2015-01-01	33
2016-01-01	25