Year	Number of Firms
1992-01-01	7
1997-01-01	13
2002-01-01	119
2003-01-01	144
2004-01-01	121
2005-01-01	135
2006-01-01	113
2007-01-01	131
2008-01-01	278
2009-01-01	218
2010-01-01	59
2011-01-01	72
2012-01-01	80
2013-01-01	60
2014-01-01	59
2015-01-01	42
2016-01-01	33