Year	Number of Firms
1992-01-01	23
1997-01-01	40
2002-01-01	37
2003-01-01	50
2004-01-01	51
2005-01-01	53
2006-01-01	50
2007-01-01	86
2008-01-01	88
2009-01-01	222
2010-01-01	356
2011-01-01	304
2012-01-01	222
2013-01-01	235
2014-01-01	215
2015-01-01	242
2016-01-01	224