| Period ↑ | value | obs. status |
| 1999-Q1 | - | Missing value; data exist but were not collected (L) |
| 1999-Q2 | - | Missing value; data exist but were not collected (L) |
| 1999-Q3 | - | Missing value; data exist but were not collected (L) |
| 1999-Q4 | - | Missing value; data exist but were not collected (L) |
| 2000-Q1 | - | Missing value; data exist but were not collected (L) |
| 2000-Q2 | - | Missing value; data exist but were not collected (L) |
| 2000-Q3 | - | Missing value; data exist but were not collected (L) |
| 2000-Q4 | - | Missing value; data exist but were not collected (L) |
| 2001-Q1 | - | Missing value; data exist but were not collected (L) |
| 2001-Q2 | - | Missing value; data exist but were not collected (L) |
| 2001-Q3 | - | Missing value; data exist but were not collected (L) |
| 2001-Q4 | - | Missing value; data exist but were not collected (L) |
| 2002-Q1 | - | Missing value; data exist but were not collected (L) |
| 2002-Q2 | - | Missing value; data exist but were not collected (L) |
| 2002-Q3 | - | Missing value; data exist but were not collected (L) |
| 2002-Q4 | -2.714 | Normal value (A) |
| 2003-Q1 | -2.864 | Normal value (A) |
| 2003-Q2 | -2.887 | Normal value (A) |
| 2003-Q3 | -3.151 | Normal value (A) |
| 2003-Q4 | -3.191 | Normal value (A) |
| 2004-Q1 | -3.222 | Normal value (A) |
| 2004-Q2 | -3.283 | Normal value (A) |
| 2004-Q3 | -3.053 | Normal value (A) |
| 2004-Q4 | -2.957 | Normal value (A) |
| 2005-Q1 | -2.957 | Normal value (A) |
| 2005-Q2 | -2.958 | Normal value (A) |
| 2005-Q3 | -2.704 | Normal value (A) |
| 2005-Q4 | -2.591 | Normal value (A) |
| 2006-Q1 | -2.149 | Normal value (A) |
| 2006-Q2 | -1.776 | Normal value (A) |
| 2006-Q3 | -1.612 | Normal value (A) |
| 2006-Q4 | -1.488 | Normal value (A) |
| 2007-Q1 | -1.339 | Normal value (A) |
| 2007-Q2 | -1.024 | Normal value (A) |
| 2007-Q3 | -0.824 | Normal value (A) |
| 2007-Q4 | -0.647 | Normal value (A) |
| 2008-Q1 | -0.772 | Normal value (A) |
| 2008-Q2 | -1.182 | Normal value (A) |
| 2008-Q3 | -1.510 | Normal value (A) |
| 2008-Q4 | -2.160 | Normal value (A) |
| 2009-Q1 | -3.025 | Normal value (A) |
| 2009-Q2 | -4.156 | Normal value (A) |
| 2009-Q3 | -5.341 | Normal value (A) |
| 2009-Q4 | -6.260 | Normal value (A) |
| 2010-Q1 | -6.593 | Normal value (A) |
| 2010-Q2 | -6.337 | Normal value (A) |
| 2010-Q3 | -6.413 | Normal value (A) |
| 2010-Q4 | -6.175 | Normal value (A) |
| 2011-Q1 | -5.541 | Normal value (A) |
| 2011-Q2 | -5.264 | Normal value (A) |
| 2011-Q3 | -4.518 | Normal value (A) |
| 2011-Q4 | -4.222 | Normal value (A) |
| 2012-Q1 | -4.032 | Normal value (A) |
| 2012-Q2 | -3.940 | Normal value (A) |
| 2012-Q3 | -3.794 | Normal value (A) |
| 2012-Q4 | -3.641 | Normal value (A) |
| 2013-Q1 | -3.670 | Normal value (A) |
| 2013-Q2 | -3.462 | Normal value (A) |
| 2013-Q3 | -3.383 | Normal value (A) |
| 2013-Q4 | -3.005 | Normal value (A) |
| 2014-Q1 | -2.840 | Normal value (A) |
| 2014-Q2 | -2.689 | Normal value (A) |
| 2014-Q3 | -2.618 | Normal value (A) |
| 2014-Q4 | -2.580 | Normal value (A) |
| 2015-Q1 | -2.511 | Normal value (A) |
| 2015-Q2 | -2.427 | Normal value (A) |
| 2015-Q3 | -2.164 | Normal value (A) |
| 2015-Q4 | -2.079 | Normal value (A) |
| 2016-Q1 | -1.950 | Normal value (A) |
| 2016-Q2 | -1.791 | Normal value (A) |
| 2016-Q3 | -1.765 | Normal value (A) |
| 2016-Q4 | -1.547 | Normal value (A) |