1990-01 0 1990-03 0.30103 1993-08 0 1994-04 0.30103 1994-05 0.477121 1994-11 0 1995-08 0 1996-03 0 1996-04 0 1996-07 0 1996-09 0.30103 1996-12 0 1997-01 0.60206 1997-02 0.30103 1997-03 0.30103 1997-04 0 1997-05 0.60206 1997-06 0.954243 1997-07 1.07918 1997-08 1.62325 1997-09 1.96379 1997-10 2.01284 1997-11 2.13672 1997-12 1.98677 1998-01 2.11059 1998-02 2.07188 1998-03 2.02119 1998-04 1.86923 1998-05 2.02119 1998-06 1.98677 1998-07 1.97313 1998-08 1.68124 1998-09 1.5563 1998-10 1.59106 1998-11 1.66276 1998-12 1.5682 1999-01 1.79239 1999-02 1.6902 1999-03 1.77815 1999-04 1.60206 1999-05 1.57978 1999-06 1.54407 1999-07 1.60206 1999-08 1.74036 1999-09 1.66276 1999-10 1.77085 1999-11 1.75587 1999-12 1.716 2000-01 1.79934 2000-02 1.77815 2000-03 1.60206 2000-04 1.62325 2000-05 1.66276 2000-06 1.62325 2000-07 1.65321 2000-08 1.69897 2000-09 1.79239 2000-10 1.86923 2000-11 1.95904 2000-12 1.94939 2001-01 2.16435 2001-02 2.09691 2001-03 2.10721 2001-04 2.13672 2001-05 2.07555 2001-06 2.0569 2001-07 2.04922 2001-08 2.1038 2001-09 2.08991 2001-10 2.19866 2001-11 2.27416 2001-12 2.35218 2002-01 2.54407 2002-02 2.52114 2002-03 2.75435 2002-04 2.94052 2002-05 3.10175 2002-06 3.03503 2002-07 3.03543 2002-08 2.9058 2002-09 2.85733 2002-10 2.88593 2002-11 2.96567 2002-12 2.91751 2003-01 2.84942 2003-02 2.82217 2003-03 2.96848 2003-04 3.15957 2003-05 3.07664 2003-06 3.08171 2003-07 2.95328 2003-08 2.95231 2003-09 2.99167 2003-10 3.04571 2003-11 3.09968 2003-12 3.11294 2004-01 3.26905 2004-02 3.2887 2004-03 3.31366 2004-04 3.33304 2004-05 3.36399 2004-06 3.40346 2004-07 3.3298 2004-08 3.22968 2004-09 3.23045 2004-10 3.48101 2004-11 3.57852 2004-12 2.37291