Year	Number of Firms
1992-01-01	31
1997-01-01	43
2002-01-01	27
2003-01-01	28
2004-01-01	26
2005-01-01	29
2006-01-01	31
2007-01-01	34
2008-01-01	41
2009-01-01	33
2010-01-01	36
2011-01-01	30
2012-01-01	36
2013-01-01	35
2014-01-01	28
2015-01-01	37
2016-01-01	34