Year	Number of Firms
1992-01-01	2
1997-01-01	24
2002-01-01	34
2003-01-01	29
2004-01-01	25
2005-01-01	28
2006-01-01	32
2007-01-01	35
2008-01-01	32
2009-01-01	29
2010-01-01	45
2011-01-01	43
2012-01-01	41
2013-01-01	50
2014-01-01	51
2015-01-01	50
2016-01-01	57