Bestand
1991,87; 1993,112; 1995,125; 1997,137; 1999,147; 2001,157; 2003,167; 2004,184; 2005,192; 2006,200; 2007,208; 2008,225; 2009,233; 2010,239; 2011,244; 2012,255; 2014,268; 2015,274; 2016,281; 2017,293; 2018,297; 2019,304; 2020,312; 2021,322; 2022,330; 2023,337; 2024,341