Year	Number of Firms
1992-01-01	149
1997-01-01	267
2002-01-01	334
2003-01-01	356
2004-01-01	412
2005-01-01	455
2006-01-01	437
2007-01-01	514
2008-01-01	525
2009-01-01	542
2010-01-01	599
2011-01-01	645
2012-01-01	668
2013-01-01	663
2014-01-01	669
2015-01-01	616
2016-01-01	589