Year	Number of Firms
1992-01-01	3
1997-01-01	25
2002-01-01	28
2003-01-01	23
2004-01-01	25
2005-01-01	29
2006-01-01	37
2007-01-01	44
2008-01-01	43
2009-01-01	35
2010-01-01	38
2011-01-01	38
2012-01-01	36
2013-01-01	45
2014-01-01	43
2015-01-01	36
2016-01-01	50