Year	Number of Firms
1992-01-01	13
1997-01-01	31
2002-01-01	25
2003-01-01	18
2004-01-01	17
2005-01-01	22
2006-01-01	19
2007-01-01	22
2008-01-01	16
2009-01-01	19
2010-01-01	24
2011-01-01	22
2012-01-01	22
2013-01-01	31
2014-01-01	30
2015-01-01	22
2016-01-01	24