Year	Number of Firms
1992-01-01	4
1997-01-01	10
2002-01-01	10
2003-01-01	10
2004-01-01	19
2005-01-01	16
2006-01-01	17
2007-01-01	23
2008-01-01	19
2009-01-01	20
2010-01-01	22
2011-01-01	28
2012-01-01	24
2013-01-01	25
2014-01-01	30
2015-01-01	33
2016-01-01	26