Year	Number of Firms
1992-01-01	15
1997-01-01	29
2002-01-01	42
2003-01-01	48
2004-01-01	50
2005-01-01	47
2006-01-01	45
2007-01-01	60
2008-01-01	60
2009-01-01	57
2010-01-01	51
2011-01-01	57
2012-01-01	61
2013-01-01	54
2014-01-01	56
2015-01-01	56
2016-01-01	58