Year	Number of Firms
1992-01-01	21
1997-01-01	23
2002-01-01	33
2003-01-01	25
2004-01-01	29
2005-01-01	35
2006-01-01	37
2007-01-01	49
2008-01-01	39
2009-01-01	39
2010-01-01	35
2011-01-01	49
2012-01-01	43
2013-01-01	42
2014-01-01	45
2015-01-01	55
2016-01-01	55