Year	Number of Firms
1997-01-01	6
2002-01-01	17
2003-01-01	18
2004-01-01	37
2005-01-01	35
2006-01-01	35
2007-01-01	41
2008-01-01	62
2009-01-01	67
2010-01-01	82
2011-01-01	88
2012-01-01	82
2013-01-01	85
2014-01-01	80
2015-01-01	80
2016-01-01	104