Year	Number of Firms
1992-01-01	69
1997-01-01	54
2002-01-01	57
2003-01-01	61
2004-01-01	64
2005-01-01	69
2006-01-01	80
2007-01-01	97
2008-01-01	78
2009-01-01	98
2010-01-01	115
2011-01-01	58