Year	Number of Firms
1992-01-01	4
1997-01-01	6
2002-01-01	17
2003-01-01	18
2004-01-01	16
2005-01-01	15
2006-01-01	17
2007-01-01	15
2008-01-01	15
2009-01-01	19
2010-01-01	29
2011-01-01	35
2012-01-01	26
2013-01-01	35
2014-01-01	20
2015-01-01	29
2016-01-01	32