Year	Number of Firms
1992-01-01	21
1997-01-01	25
2002-01-01	31
2003-01-01	26
2004-01-01	39
2005-01-01	43
2006-01-01	56
2007-01-01	53
2008-01-01	51
2009-01-01	56
2010-01-01	53
2011-01-01	50
2012-01-01	55
2013-01-01	56
2014-01-01	56
2015-01-01	56
2016-01-01	53