Year	Number of Firms
1992-01-01	7
1997-01-01	15
2002-01-01	23
2003-01-01	15
2004-01-01	12
2005-01-01	20
2006-01-01	23
2007-01-01	14
2008-01-01	23
2009-01-01	22
2010-01-01	30
2011-01-01	35
2012-01-01	33
2013-01-01	35
2014-01-01	26
2015-01-01	30
2016-01-01	27