Year	Number of Firms
1992-01-01	2
1997-01-01	4
2002-01-01	7
2003-01-01	12
2004-01-01	17
2005-01-01	23
2006-01-01	25
2007-01-01	28
2008-01-01	28
2009-01-01	24
2010-01-01	29
2011-01-01	30
2012-01-01	30
2013-01-01	33
2014-01-01	33
2015-01-01	26
2016-01-01	26