MS = (AER − ERER)

(ERER)

(AER)

Year

-

-

0.295

1985

-

-

0.314

1986

-

-

0.295

1987

−0.295

0.58

0.285

1988

−0.396

0.69

0.294

1989

−0.258

0.54

0.282

1990

−0.256

0.54

0.284

1991

−0.088

0.

0.797

1992

−0.239

0.56

0.321

1993

−0.29

0.65

0.360

1994

−0.388

0.74

0.352

1995

−0.366

0.73

0.364

1996

−0.484

0.87

0.386

1997

−0.409

0.86

0.451

1998

−0.49

0.95

0.460

1999

−0.577

1.12

0.543

2000

−0.636

1.28

0.644

2001

−1.08

2.29

1.210

2002

−1.309

2.61

1.301

2003

−1.276

2.52

1.244

2004

−1.292

2.64

1.348

2005

−1.279

2.56

1.281

2006

−1.219

2.44

1.221

2007

−1.255

2.47

1.245

2008

−1.316

2.55

1.234

2009

−1.269

2.52

1.251

2010

−1.254

2.51

1.256

2011

−1.275

2.51

1.253

2012

−1.270

2.52

1.250

2013

−1.379

2.71

1.331

2014

−1.331

2.72

1.389

2015

−1.433

2.87

1.437

2016

−1.348

2.70

1.352

2017

−1.333

2.72

1.387

2018

−1.478

2.87

1.392

2019

−1.49

2.90

1.410

2020