Showing latest available data.
| Rank | Countries
 |
Amount
 |
|
|---|---|---|---|
| # 1 |  United States: |
20 | |
| = 2 |  Australia: |
17 | |
| = 2 |  Luxembourg: |
17 | |
| # 4 |  Canada: |
16 | |
| = 5 |  Finland: |
12 | |
| = 5 |  Czech Republic: |
12 | |
| = 5 |  Belgium: |
12 | |
| = 8 |  Denmark: |
11 | |
| = 8 |  Netherlands: |
11 | |
| = 10 |  Germany: |
10 | |
| = 10 |  Ireland: |
10 | |
| = 12 |  United Kingdom: |
9 | |
| = 12 |  Japan: |
9 | |
| = 14 |  Iceland: |
8 | |
| = 14 |  Norway: |
8 | |
| = 14 |  Austria: |
8 | |
| = 14 |  Korea, South: |
8 | |
| = 14 |  Poland: |
8 | |
| = 14 |  New Zealand: |
8 | |
| = 14 |  Greece: |
8 | |
| # 21 |  Italy: |
7 | |
| = 22 |  Switzerland: |
6 | |
| = 22 |  France: |
6 | |
| = 22 |  Spain: |
6 | |
| = 22 |  Hungary: |
6 | |
| = 22 |  Sweden: |
6 | |
| # 27 |  Portugal: |
5 | |
| # 28 |  Mexico: |
4 | |
| # 29 |  Turkey: |
3 | |
| Weighted average: | 9.3 |
