| X-axis label | Heat Pump | Solar Energy | Both | Neither |
|---|---|---|---|---|
| 1700-1949 | 4259 | 10991 | 1582 | 148239 |
| 1950-1977 | 5673 | 20866 | 2190 | 183795 |
| 1978-1993 | 4707 | 22257 | 1871 | 161004 |
| 1994-1999 | 3420 | 13442 | 956 | 111100 |
| 2000-2004 | 4467 | 17110 | 1783 | 178639 |
| 2005-2009 | 5623 | 17549 | 3494 | 160888 |
| 2010-2014 | 1248 | 8219 | 1319 | 3790 |
| 2015-2019 | 22045 | 27234 | 5491 | 2225 |
| 2020-2025 | 80376 | 9141 | 8913 | 5949 |