Year

Fast Forward Shocks (FS)

Fast Reverse Shocks (RS)

Total

1997

16

14

30

1998

13

12

25

1999

16

13

29

2000

18

11

29

2002

19

9

28

2004

19

12

31

2005

19

10

29

2006

20

14

34

2007

16

12

28

2008

17

13

30

2009

26

14

40

2010

13

13

26

2011

19

15

34

2012

16

16

32

2014

23

16

39

2015

17

9

26

2016

14

11

25

Total

301

214

515