| Year | Quarter | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2014 | 2015 | 2016 | 2017 | Q4 17 | Q1 18 | Q2 18 | Q3 18 | Q4 18 | |
| Australia | 42.3 | 44.4 | 51.3 | 55.3 | 47.3 | 45.8 | 46.8 | 46.9 | 47.9 | 47.6 |
| Belgium | 53.6 | 51.5 | 50.6 | 55.8 | 52.5 | 49.7 | 50.1 | 50.8 | 50.3 | 48.6 |
| Canada | 46.1 | 46.8 | 53.1 | 57.9 | 55.3 | 54.8 | 55.2 | 55.6 | 54.8 | 55.9 |
| Denmark | 48.3 | 40.5 | 38.9 | 38.8 | 37.2 | 38.5 | 39.3 | 39.1 | 38.9 | 38.9 |
| Finland | 44.5 | 41.4 | 41.7 | 40.2 | 37.2 | 37.7 | 38.8 | 38.0 | 37.8 | 36.1 |
| France | 54.0 | 54.3 | 52.8 | 54.4 | 55.6 | 55.2 | 54.9 | 54.7 | 54.6 | 54.5 |
| Germany | 19.4 | 19.3 | 18.9 | 18.4 | 19.3 | 19.6 | 19.5 | 19.7 | 19.8 | 19.9 |
| Italy | 43.1 | 41.0 | 39.0 | 34.7 | 32.5 | 31.9 | 31.6 | 31.5 | 31.4 | 30.8 |
| Japan | 35.3 | 34.8 | 33.0 | 32.7 | 32.7 | 32.1 | 31.8 | 32.1 | 32.5 | 32.9 |
| Korea | 42.4 | 41.8 | 41.4 | 40.3 | 39.2 | 38.6 | 39.0 | 39.3 | 39.7 | 39.9 |
| Netherlands | 46.1 | 50.5 | 52.8 | 53.0 | 52.2 | 51.6 | 52.8 | 51.4 | 51.0 | 48.7 |
| Norway | 48.3 | 43.4 | 44.6 | 47.4 | 48.2 | 47.8 | 47.7 | 47.5 | 46.8 | 46.8 |
| Portugal | 63.7 | 58.2 | 55.4 | 52.9 | 50.6 | 49.9 | 48.7 | 48.7 | 49.1 | 49.0 |
| Spain | 47.7 | 43.6 | 39.6 | 37.3 | 35.2 | 33.6 | 33.1 | 33.4 | 33.5 | 33.2 |
| Sweden | 44.1 | 43.3 | 38.0 | 35.2 | 35.8 | 36.0 | 38.2 | 38.2 | 39.2 | 38.7 |
| United Kingdom | 40.0 | 36.5 | 34.9 | 36.8 | 35.7 | 35.5 | 35.1 | 35.1 | 35.1 | 35.4 |
| United States | 36.4 | 36.8 | 37.4 | 39.5 | 41.0 | 41.3 | 41.1 | 41.7 | 41.4 | 41.4 |