Year	Number of Firms
1992-01-01	12
1997-01-01	35
2002-01-01	28
2003-01-01	30
2004-01-01	27
2005-01-01	29
2006-01-01	38
2007-01-01	31
2008-01-01	40
2009-01-01	47
2010-01-01	42
2011-01-01	47
2012-01-01	45
2013-01-01	51
2014-01-01	52
2015-01-01	49
2016-01-01	48