Year	Number of Firms
1992-01-01	21
1997-01-01	33
2002-01-01	24
2003-01-01	34
2004-01-01	45
2005-01-01	52
2006-01-01	54
2007-01-01	53
2008-01-01	45
2009-01-01	29
2010-01-01	25
2011-01-01	37
2012-01-01	28
2013-01-01	26
2014-01-01	31
2015-01-01	31
2016-01-01	37