Year	Number of Firms
1992-01-01	20
1997-01-01	25
2002-01-01	16
2003-01-01	16
2004-01-01	18
2005-01-01	23
2006-01-01	23
2007-01-01	35
2008-01-01	29
2009-01-01	26
2010-01-01	28
2011-01-01	26
2012-01-01	25
2013-01-01	30
2014-01-01	32
2015-01-01	31
2016-01-01	23