Year	Number of Firms
1992-01-01	29
1997-01-01	15
2002-01-01	27
2003-01-01	27
2004-01-01	22
2005-01-01	34
2006-01-01	34
2007-01-01	26
2008-01-01	29
2009-01-01	35
2010-01-01	38
2011-01-01	35
2012-01-01	30
2013-01-01	38
2014-01-01	31
2015-01-01	33
2016-01-01	38