Year	Number of Firms
1992-01-01	19
1997-01-01	19
2002-01-01	31
2003-01-01	24
2004-01-01	33
2005-01-01	30
2006-01-01	30
2007-01-01	30
2008-01-01	49
2009-01-01	44
2010-01-01	48
2011-01-01	43
2012-01-01	51
2013-01-01	38
2014-01-01	39
2015-01-01	38
2016-01-01	33