Holding :
1976:205,1978:313,319,322,1992:481,487,1993:498,500,1994:507,509,510,511,512,1995:513,514,515,516,518,519,520,521,1996:526,528,529,530,531,532,533,534,1997:535,536,537,538,544,545,1999:559,560,561,563,564,565,566,567,2000:569,570,572,573,574,575,576,2001:588,589,2004:612,613,614,615,616,618,619,620,621,622,2005:623,624,625,626,627,628,629,630,631,632,633,2006:634,635,636,637,638,639,640,641,642,643,644