Year	Number of Firms
1992-01-01	39
1997-01-01	22
2002-01-01	31
2003-01-01	36
2004-01-01	44
2005-01-01	52
2006-01-01	48
2007-01-01	50
2008-01-01	46
2009-01-01	45
2010-01-01	51
2011-01-01	50
2012-01-01	50
2013-01-01	50
2014-01-01	48
2015-01-01	40
2016-01-01	44