Year	Number of Firms
1992-01-01	20
1997-01-01	34
2002-01-01	31
2003-01-01	36
2004-01-01	25
2005-01-01	30
2006-01-01	32
2007-01-01	54
2008-01-01	37
2009-01-01	38
2010-01-01	37
2011-01-01	52
2012-01-01	38
2013-01-01	43
2014-01-01	45
2015-01-01	38
2016-01-01	45