|
| Années | Valeurs | Variations (%) ** |
| 1970 | 0,00 |
|
| 1971 | 0,37 |
? |
| 1972 | 0,00 |
-100,00 |
| 1973 | 1,64 |
? |
| 1974 | 24,91 |
1 418,90 |
| 1975 | 18,03 |
-27,62 |
| 1976 | 15,93 |
-11,65 |
| 1977 | 19,20 |
20,53 |
| 1978 | 16,16 |
-15,83 |
| 1979 | 38,55 |
138,55 |
| 1980 | 24,03 |
-37,67 |
| 1981 | 3,24 |
-86,52 |
| 1982 | 1,51 |
-53,40 |
| 1983 | 4,08 |
170,20 |
| 1984 | 8,95 |
119,36 |
| 1985 | 9,57 |
6,93 |
| 1986 | 4,31 |
-54,96 |
| 1987 | 9,57 |
122,04 |
| 1988 | 8,11 |
-15,26 |
| 1989 | 20,09 |
147,72 |
| 1990 | 21,86 |
8,81 |
| 1991 | 13,85 |
-36,64 |
| 1992 | 17,10 |
23,47 |
| 1993 | 26,43 |
54,56 |
| 1994 | 16,76 |
-36,59 |
| 1995 | 15,17 |
-9,49 |
| 1996 | 17,64 |
16,28 |
| 1997 | 13,89 |
-21,26 |
| 1998 | 5,16 |
-62,85 |
| 1999 | 9,89 |
91,67 |
| 2000 | 20,92 |
111,53 |
| 2001 | 12,95 |
-38,10 |
| 2002 | 9,19 |
-29,03 |
| 2003 | 10,38 |
12,95 |
| 2004 | 15,41 |
48,46 |
| 2005 | 18,61 |
20,77 |
| 2006 | 16,18 |
-13,06 |
| 2007 | 14,44 |
-10,75 |
| 2008 | 16,87 |
16,83 |
| 2009 | 9,19 |
-45,52 |
| 2010 | 12,83 |
39,61 |
| 2011 | 16,40 |
27,83 |
| 2012 | 13,92 |
-15,12 |
| 2013 | 10,62 |
-23,71 |
| 2014 | 8,05 |
-24,20 |
| 2015 | 2,99 |
-62,86 |
| 2016 | 2,80 |
-6,35 |
| 2017 | 6,12 |
118,57 |
|
