Year	Number of Firms
1992-01-01	19
1997-01-01	22
2002-01-01	18
2003-01-01	18
2004-01-01	19
2005-01-01	24
2006-01-01	23
2007-01-01	30
2008-01-01	33
2009-01-01	31
2010-01-01	30
2011-01-01	28
2012-01-01	25
2013-01-01	34
2014-01-01	31
2015-01-01	30
2016-01-01	24