Year	Number of Firms
1992-01-01	20
1997-01-01	19
2002-01-01	18
2003-01-01	30
2004-01-01	33
2005-01-01	36
2006-01-01	33
2007-01-01	41
2008-01-01	36
2009-01-01	14
2010-01-01	20
2011-01-01	25
2012-01-01	29
2013-01-01	34
2014-01-01	33
2015-01-01	29
2016-01-01	31