| Year | 1970 | 1975 | 1980 | 1985 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Specification | |||||||||||||||||||||||||||||||||
| Total of companies |
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| Individual companies |
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| Societies |
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| S.A. |
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| S.A.R.L. |
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| One person S.A.R.L. |
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| Simplified S.A.R.L. |
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| S.E.N.C. |
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| S.E.C.S. |
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| Cooperatives |
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| Other |
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