Year	Number of Firms
1992-01-01	1
2002-01-01	5
2003-01-01	8
2004-01-01	6
2005-01-01	17
2006-01-01	18
2007-01-01	12
2008-01-01	20
2009-01-01	18
2010-01-01	17
2011-01-01	13
2012-01-01	15
2013-01-01	22
2014-01-01	18
2015-01-01	13
2016-01-01	7