Year	Number of Firms
1992-01-01	17
1997-01-01	28
2002-01-01	38
2003-01-01	39
2004-01-01	41
2005-01-01	46
2006-01-01	48
2007-01-01	49
2008-01-01	51
2009-01-01	48
2010-01-01	60
2011-01-01	61
2012-01-01	54
2013-01-01	60
2014-01-01	60
2015-01-01	51
2016-01-01	55