Year	Number of Firms
1992-01-01	3
1997-01-01	16
2002-01-01	9
2003-01-01	12
2004-01-01	13
2005-01-01	16
2006-01-01	15
2007-01-01	16
2008-01-01	21
2009-01-01	17
2010-01-01	20
2011-01-01	23
2012-01-01	30
2013-01-01	22
2014-01-01	25
2015-01-01	28
2016-01-01	23