Year	Number of Firms
1992-01-01	6
1997-01-01	16
2002-01-01	12
2003-01-01	14
2004-01-01	18
2005-01-01	18
2006-01-01	16
2007-01-01	13
2008-01-01	14
2009-01-01	20
2010-01-01	16
2011-01-01	22
2012-01-01	24
2013-01-01	22
2014-01-01	27
2015-01-01	24
2016-01-01	31