Year	annual %
1991	94.9277875541256
1992	208.177822773089
1993	37.0791193186462
1994	22.5892364066774
1995	15.1550586671759
1996	11.4524565649195
1997	8.43083359163532
1998	7.42803135144744
1999	6.5314195214609
2000	5.56526765538521
2001	8.67521845375352
2002	7.58168654139426
2003	5.64045104674675
2004	3.36094209509122
2005	1.52057515263171
2006	2.22109087893656
2007	4.17748452362763
2008	4.46561784391565
2009	3.39968089051037
2010	-1.02931788544865
2011	1.04001500712062
2012	0.479044260876066
2013	1.60035593502236
2014	0.456031615681681
2015	1.00504348534045
2016	0.874115426326341
2017	1.4640640238877
2018	2.1125914748453
2019	2.29485081978052
2020	1.12405804947954
2021	2.6764676910453
2022	6.48269750268742
2023	8.88245136045302