Year	Number of Firms
1992-01-01	274
1997-01-01	282
2002-01-01	274
2003-01-01	294
2004-01-01	274
2005-01-01	315
2006-01-01	336
2007-01-01	334
2008-01-01	333
2009-01-01	336
2010-01-01	307
2011-01-01	270
2012-01-01	263
2013-01-01	233
2014-01-01	249
2015-01-01	237
2016-01-01	273