Year	Number of Firms
1992-01-01	3
1997-01-01	7
2002-01-01	37
2003-01-01	48
2004-01-01	42
2005-01-01	39
2006-01-01	31
2007-01-01	37
2008-01-01	32
2009-01-01	43
2010-01-01	51
2011-01-01	52
2012-01-01	46
2013-01-01	57
2014-01-01	51
2015-01-01	52
2016-01-01	48