Year	Number of Firms
1992-01-01	14
1997-01-01	19
2002-01-01	15
2003-01-01	14
2004-01-01	15
2005-01-01	30
2006-01-01	22
2007-01-01	22
2008-01-01	20
2009-01-01	22
2010-01-01	20
2011-01-01	19
2012-01-01	17
2013-01-01	17
2014-01-01	14
2015-01-01	14
2016-01-01	21