Year	Number of Firms
1992-01-01	25
1997-01-01	17
2002-01-01	23
2003-01-01	29
2004-01-01	30
2005-01-01	21
2006-01-01	32
2007-01-01	47
2008-01-01	51
2009-01-01	51
2010-01-01	58
2011-01-01	57
2012-01-01	53
2013-01-01	45
2014-01-01	54
2015-01-01	50
2016-01-01	55