Year	Number of Firms
1992-01-01	6
1997-01-01	9
2002-01-01	17
2003-01-01	17
2004-01-01	22
2005-01-01	23
2006-01-01	26
2007-01-01	25
2008-01-01	31
2009-01-01	19
2010-01-01	25
2011-01-01	19
2012-01-01	18
2013-01-01	22
2014-01-01	18
2015-01-01	21
2016-01-01	20