Year	Number of Firms
1992-01-01	16
1997-01-01	20
2002-01-01	19
2003-01-01	24
2004-01-01	20
2005-01-01	18
2006-01-01	24
2007-01-01	25
2008-01-01	21
2009-01-01	21
2010-01-01	22
2011-01-01	28
2012-01-01	26
2013-01-01	30
2014-01-01	26
2015-01-01	24
2016-01-01	30