Year	Number of Firms
1992-01-01	34
1997-01-01	47
2002-01-01	25
2003-01-01	29
2004-01-01	21
2005-01-01	21
2006-01-01	26
2007-01-01	19
2008-01-01	21
2009-01-01	22
2010-01-01	32
2011-01-01	28
2012-01-01	25
2013-01-01	29
2014-01-01	27
2015-01-01	18
2016-01-01	17