Year	Number of Firms
1992-01-01	31
1997-01-01	37
2002-01-01	40
2003-01-01	47
2004-01-01	51
2005-01-01	51
2006-01-01	54
2007-01-01	53
2008-01-01	54
2009-01-01	71
2010-01-01	60
2011-01-01	61
2012-01-01	54
2013-01-01	61
2014-01-01	56
2015-01-01	58
2016-01-01	62