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)