Year	Number of Firms
1992-01-01	4
1997-01-01	9
2002-01-01	13
2003-01-01	9
2004-01-01	12
2005-01-01	17
2006-01-01	10
2007-01-01	15
2008-01-01	12
2009-01-01	14
2010-01-01	28
2011-01-01	29
2012-01-01	24
2013-01-01	29
2014-01-01	22
2015-01-01	24
2016-01-01	43