Year	Number of Firms
1992-01-01	87
1997-01-01	105
2002-01-01	105
2003-01-01	107
2004-01-01	123
2005-01-01	125
2006-01-01	134
2007-01-01	150
2008-01-01	153
2009-01-01	191
2010-01-01	182
2011-01-01	101