GROWTH OF COLLECTION SSS 
1988     records x  1.000
 
1990     specimen x 10.000
 
1992  
 
1994  
 
1996  
 
1998  
 
2000  
 
2002  
 
2004  
 
2006  
 
2008  
 
2009   *
  *
5 10 15 20 25 30 35 40 45 50 55
* In 2009 we donated most of our recent shells to the University of Amsterdam (20.399 records containing 96.290 specimen)
 

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